fpp7
run:
Multiplos de 7 que son primos.
La cantidad generada es mayor en HCN y menor en primos.
1. (7x2)-1=13 is prime.
2. (7x4)+1=29 is prime.
3. (7x6)-1=41 is prime.
4. (7x6)+1=43 is prime.
5. (7x10)+1=71 is prime.
6. (7x12)-1=83 is prime.
7. (7x14)-1=97 is prime.
8. (7x16)+1=113 is prime.
9. (7x18)+1=127 is prime.
10. (7x20)-1=139 is prime.
11. (7x24)-1=167 is prime.
12. (7x26)-1=181 is prime.
13. (7x28)+1=197 is prime.
14. (7x30)+1=211 is prime.
15. (7x32)-1=223 is prime.
16. (7x34)+1=239 is prime.
17. (7x36)-1=251 is prime.
18. (7x40)+1=281 is prime.
19. (7x42)-1=293 is prime.
20. (7x44)-1=307 is prime.
21. (7x48)+1=337 is prime.
22. (7x50)-1=349 is prime.
23. (7x54)+1=379 is prime.
24. (7x60)-1=419 is prime.
25. (7x60)+1=421 is prime.
26. (7x62)-1=433 is prime.
27. (7x64)+1=449 is prime.
28. (7x66)-1=461 is prime.
29. (7x66)+1=463 is prime.
30. (7x70)+1=491 is prime.
31. (7x72)-1=503 is prime.
32. (7x78)+1=547 is prime.
33. (7x84)-1=587 is prime.
34. (7x86)-1=601 is prime.
35. (7x88)+1=617 is prime.
36. (7x90)+1=631 is prime.
37. (7x92)-1=643 is prime.
38. (7x94)+1=659 is prime.
39. (7x96)+1=673 is prime.
40. (7x100)+1=701 is prime.
41. (7x104)-1=727 is prime.
42. (7x106)+1=743 is prime.
43. (7x108)+1=757 is prime.
44. (7x110)-1=769 is prime.
45. (7x114)-1=797 is prime.
46. (7x116)-1=811 is prime.
47. (7x118)+1=827 is prime.
48. (7x120)-1=839 is prime.
49. (7x122)-1=853 is prime.
50. (7x126)-1=881 is prime.
51. (7x126)+1=883 is prime.
52. (7x130)+1=911 is prime.
53. (7x134)-1=937 is prime.
54. (7x136)+1=953 is prime.
55. (7x138)+1=967 is prime.
56. (7x144)+1=1009 is prime.
57. (7x146)-1=1021 is prime.
58. (7x150)-1=1049 is prime.
59. (7x150)+1=1051 is prime.
60. (7x152)-1=1063 is prime.
61. (7x156)-1=1091 is prime.
62. (7x156)+1=1093 is prime.
63. (7x166)+1=1163 is prime.
64. (7x174)-1=1217 is prime.
65. (7x176)-1=1231 is prime.
66. (7x180)-1=1259 is prime.
67. (7x184)+1=1289 is prime.
68. (7x186)-1=1301 is prime.
69. (7x186)+1=1303 is prime.
70. (7x196)+1=1373 is prime.
71. (7x200)-1=1399 is prime.
72. (7x204)-1=1427 is prime.
73. (7x204)+1=1429 is prime.
74. (7x210)+1=1471 is prime.
75. (7x212)-1=1483 is prime.
76. (7x214)+1=1499 is prime.
77. (7x216)-1=1511 is prime.
78. (7x222)-1=1553 is prime.
79. (7x224)-1=1567 is prime.
80. (7x226)+1=1583 is prime.
81. (7x228)+1=1597 is prime.
82. (7x230)-1=1609 is prime.
83. (7x234)-1=1637 is prime.
84. (7x238)+1=1667 is prime.
85. (7x242)-1=1693 is prime.
86. (7x244)+1=1709 is prime.
87. (7x246)-1=1721 is prime.
88. (7x246)+1=1723 is prime.
89. (7x254)-1=1777 is prime.
90. (7x264)-1=1847 is prime.
91. (7x266)-1=1861 is prime.
92. (7x268)+1=1877 is prime.
93. (7x270)-1=1889 is prime.
94. (7x276)-1=1931 is prime.
95. (7x276)+1=1933 is prime.
96. (7x282)-1=1973 is prime.
97. (7x284)-1=1987 is prime.
98. (7x286)+1=2003 is prime.
99. (7x288)+1=2017 is prime.
100. (7x290)-1=2029 is prime.
101. (7x298)+1=2087 is prime.
102. (7x300)-1=2099 is prime.
103. (7x302)-1=2113 is prime.
104. (7x304)+1=2129 is prime.
105. (7x306)-1=2141 is prime.
106. (7x306)+1=2143 is prime.
107. (7x316)+1=2213 is prime.
108. (7x320)-1=2239 is prime.
109. (7x324)-1=2267 is prime.
110. (7x324)+1=2269 is prime.
111. (7x326)-1=2281 is prime.
112. (7x328)+1=2297 is prime.
113. (7x330)-1=2309 is prime.
114. (7x330)+1=2311 is prime.
115. (7x334)+1=2339 is prime.
116. (7x336)-1=2351 is prime.
117. (7x340)+1=2381 is prime.
118. (7x342)-1=2393 is prime.
119. (7x346)+1=2423 is prime.
120. (7x348)+1=2437 is prime.
121. (7x354)-1=2477 is prime.
122. (7x360)+1=2521 is prime.
123. (7x364)+1=2549 is prime.
124. (7x370)+1=2591 is prime.
125. (7x374)-1=2617 is prime.
126. (7x376)+1=2633 is prime.
127. (7x378)+1=2647 is prime.
128. (7x380)-1=2659 is prime.
129. (7x384)-1=2687 is prime.
130. (7x384)+1=2689 is prime.
131. (7x390)-1=2729 is prime.
132. (7x390)+1=2731 is prime.
133. (7x400)+1=2801 is prime.
134. (7x406)+1=2843 is prime.
135. (7x408)+1=2857 is prime.
136. (7x414)-1=2897 is prime.
137. (7x418)+1=2927 is prime.
138. (7x420)-1=2939 is prime.
139. (7x422)-1=2953 is prime.
140. (7x424)+1=2969 is prime.
141. (7x430)+1=3011 is prime.
142. (7x432)-1=3023 is prime.
143. (7x434)-1=3037 is prime.
144. (7x438)+1=3067 is prime.
145. (7x440)-1=3079 is prime.
146. (7x444)+1=3109 is prime.
147. (7x446)-1=3121 is prime.
148. (7x448)+1=3137 is prime.
149. (7x452)-1=3163 is prime.
150. (7x456)-1=3191 is prime.
151. (7x460)+1=3221 is prime.
152. (7x474)+1=3319 is prime.
153. (7x476)-1=3331 is prime.
154. (7x478)+1=3347 is prime.
155. (7x480)-1=3359 is prime.
156. (7x480)+1=3361 is prime.
157. (7x482)-1=3373 is prime.
158. (7x484)+1=3389 is prime.
159. (7x494)-1=3457 is prime.
160. (7x500)-1=3499 is prime.
161. (7x504)-1=3527 is prime.
162. (7x504)+1=3529 is prime.
163. (7x506)-1=3541 is prime.
164. (7x508)+1=3557 is prime.
165. (7x510)+1=3571 is prime.
166. (7x512)-1=3583 is prime.
167. (7x516)+1=3613 is prime.
168. (7x528)+1=3697 is prime.
169. (7x530)-1=3709 is prime.
170. (7x534)+1=3739 is prime.
171. (7x538)+1=3767 is prime.
172. (7x540)-1=3779 is prime.
173. (7x542)-1=3793 is prime.
174. (7x546)-1=3821 is prime.
175. (7x546)+1=3823 is prime.
176. (7x550)+1=3851 is prime.
177. (7x552)-1=3863 is prime.
178. (7x554)-1=3877 is prime.
179. (7x558)+1=3907 is prime.
180. (7x560)-1=3919 is prime.
181. (7x564)-1=3947 is prime.
182. (7x570)-1=3989 is prime.
183. (7x572)-1=4003 is prime.
184. (7x574)+1=4019 is prime.
185. (7x582)-1=4073 is prime.
186. (7x590)-1=4129 is prime.
187. (7x594)-1=4157 is prime.
188. (7x594)+1=4159 is prime.
189. (7x600)+1=4201 is prime.
190. (7x604)+1=4229 is prime.
191. (7x606)-1=4241 is prime.
192. (7x606)+1=4243 is prime.
193. (7x610)+1=4271 is prime.
194. (7x612)-1=4283 is prime.
195. (7x614)-1=4297 is prime.
196. (7x618)+1=4327 is prime.
197. (7x620)-1=4339 is prime.
198. (7x628)+1=4397 is prime.
199. (7x630)-1=4409 is prime.
200. (7x632)-1=4423 is prime.
201. (7x636)-1=4451 is prime.
202. (7x640)+1=4481 is prime.
203. (7x642)-1=4493 is prime.
204. (7x644)-1=4507 is prime.
205. (7x646)+1=4523 is prime.
206. (7x650)-1=4549 is prime.
207. (7x656)-1=4591 is prime.
208. (7x660)+1=4621 is prime.
209. (7x664)+1=4649 is prime.
210. (7x666)+1=4663 is prime.
211. (7x670)+1=4691 is prime.
212. (7x672)-1=4703 is prime.
213. (7x676)+1=4733 is prime.
214. (7x680)-1=4759 is prime.
215. (7x684)-1=4787 is prime.
216. (7x684)+1=4789 is prime.
217. (7x686)-1=4801 is prime.
218. (7x688)+1=4817 is prime.
219. (7x690)+1=4831 is prime.
220. (7x696)-1=4871 is prime.
221. (7x706)+1=4943 is prime.
222. (7x708)+1=4957 is prime.
223. (7x710)-1=4969 is prime.
224. (7x714)+1=4999 is prime.
225. (7x716)-1=5011 is prime.
226. (7x720)-1=5039 is prime.
227. (7x726)-1=5081 is prime.
228. (7x736)+1=5153 is prime.
229. (7x738)+1=5167 is prime.
230. (7x740)-1=5179 is prime.
231. (7x744)+1=5209 is prime.
232. (7x748)+1=5237 is prime.
233. (7x754)+1=5279 is prime.
234. (7x762)-1=5333 is prime.
235. (7x764)-1=5347 is prime.
236. (7x774)-1=5417 is prime.
237. (7x774)+1=5419 is prime.
238. (7x776)-1=5431 is prime.
239. (7x786)-1=5501 is prime.
240. (7x786)+1=5503 is prime.
241. (7x790)+1=5531 is prime.
242. (7x794)-1=5557 is prime.
243. (7x796)+1=5573 is prime.
244. (7x806)-1=5641 is prime.
245. (7x808)+1=5657 is prime.
246. (7x810)-1=5669 is prime.
247. (7x812)-1=5683 is prime.
248. (7x816)-1=5711 is prime.
249. (7x820)+1=5741 is prime.
250. (7x826)+1=5783 is prime.
251. (7x834)+1=5839 is prime.
252. (7x836)-1=5851 is prime.
253. (7x838)+1=5867 is prime.
254. (7x840)-1=5879 is prime.
255. (7x840)+1=5881 is prime.
256. (7x846)+1=5923 is prime.
257. (7x858)+1=6007 is prime.
258. (7x864)-1=6047 is prime.
259. (7x870)-1=6089 is prime.
260. (7x870)+1=6091 is prime.
261. (7x876)-1=6131 is prime.
262. (7x876)+1=6133 is prime.
263. (7x882)-1=6173 is prime.
264. (7x886)+1=6203 is prime.
265. (7x888)+1=6217 is prime.
266. (7x890)-1=6229 is prime.
267. (7x894)-1=6257 is prime.
268. (7x896)-1=6271 is prime.
269. (7x898)+1=6287 is prime.
270. (7x900)-1=6299 is prime.
271. (7x900)+1=6301 is prime.
272. (7x904)+1=6329 is prime.
273. (7x906)+1=6343 is prime.
274. (7x914)-1=6397 is prime.
275. (7x918)+1=6427 is prime.
276. (7x924)+1=6469 is prime.
277. (7x926)-1=6481 is prime.
278. (7x936)-1=6551 is prime.
279. (7x936)+1=6553 is prime.
280. (7x940)+1=6581 is prime.
281. (7x944)-1=6607 is prime.
282. (7x948)+1=6637 is prime.
283. (7x954)+1=6679 is prime.
284. (7x956)-1=6691 is prime.
285. (7x960)-1=6719 is prime.
286. (7x962)-1=6733 is prime.
287. (7x966)-1=6761 is prime.
288. (7x966)+1=6763 is prime.
289. (7x970)+1=6791 is prime.
290. (7x972)-1=6803 is prime.
291. (7x976)+1=6833 is prime.
292. (7x988)+1=6917 is prime.
293. (7x994)+1=6959 is prime.
294. (7x996)-1=6971 is prime.
295. (7x1000)+1=7001 is prime.
7 295/2000
BUILD SUCCESSFUL (total time: 1 second)
Multiplos de 7 que son primos.
La cantidad generada es mayor en HCN y menor en primos.
1. (7x2)-1=13 is prime.
2. (7x4)+1=29 is prime.
3. (7x6)-1=41 is prime.
4. (7x6)+1=43 is prime.
5. (7x10)+1=71 is prime.
6. (7x12)-1=83 is prime.
7. (7x14)-1=97 is prime.
8. (7x16)+1=113 is prime.
9. (7x18)+1=127 is prime.
10. (7x20)-1=139 is prime.
11. (7x24)-1=167 is prime.
12. (7x26)-1=181 is prime.
13. (7x28)+1=197 is prime.
14. (7x30)+1=211 is prime.
15. (7x32)-1=223 is prime.
16. (7x34)+1=239 is prime.
17. (7x36)-1=251 is prime.
18. (7x40)+1=281 is prime.
19. (7x42)-1=293 is prime.
20. (7x44)-1=307 is prime.
21. (7x48)+1=337 is prime.
22. (7x50)-1=349 is prime.
23. (7x54)+1=379 is prime.
24. (7x60)-1=419 is prime.
25. (7x60)+1=421 is prime.
26. (7x62)-1=433 is prime.
27. (7x64)+1=449 is prime.
28. (7x66)-1=461 is prime.
29. (7x66)+1=463 is prime.
30. (7x70)+1=491 is prime.
31. (7x72)-1=503 is prime.
32. (7x78)+1=547 is prime.
33. (7x84)-1=587 is prime.
34. (7x86)-1=601 is prime.
35. (7x88)+1=617 is prime.
36. (7x90)+1=631 is prime.
37. (7x92)-1=643 is prime.
38. (7x94)+1=659 is prime.
39. (7x96)+1=673 is prime.
40. (7x100)+1=701 is prime.
41. (7x104)-1=727 is prime.
42. (7x106)+1=743 is prime.
43. (7x108)+1=757 is prime.
44. (7x110)-1=769 is prime.
45. (7x114)-1=797 is prime.
46. (7x116)-1=811 is prime.
47. (7x118)+1=827 is prime.
48. (7x120)-1=839 is prime.
49. (7x122)-1=853 is prime.
50. (7x126)-1=881 is prime.
51. (7x126)+1=883 is prime.
52. (7x130)+1=911 is prime.
53. (7x134)-1=937 is prime.
54. (7x136)+1=953 is prime.
55. (7x138)+1=967 is prime.
56. (7x144)+1=1009 is prime.
57. (7x146)-1=1021 is prime.
58. (7x150)-1=1049 is prime.
59. (7x150)+1=1051 is prime.
60. (7x152)-1=1063 is prime.
61. (7x156)-1=1091 is prime.
62. (7x156)+1=1093 is prime.
63. (7x166)+1=1163 is prime.
64. (7x174)-1=1217 is prime.
65. (7x176)-1=1231 is prime.
66. (7x180)-1=1259 is prime.
67. (7x184)+1=1289 is prime.
68. (7x186)-1=1301 is prime.
69. (7x186)+1=1303 is prime.
70. (7x196)+1=1373 is prime.
71. (7x200)-1=1399 is prime.
72. (7x204)-1=1427 is prime.
73. (7x204)+1=1429 is prime.
74. (7x210)+1=1471 is prime.
75. (7x212)-1=1483 is prime.
76. (7x214)+1=1499 is prime.
77. (7x216)-1=1511 is prime.
78. (7x222)-1=1553 is prime.
79. (7x224)-1=1567 is prime.
80. (7x226)+1=1583 is prime.
81. (7x228)+1=1597 is prime.
82. (7x230)-1=1609 is prime.
83. (7x234)-1=1637 is prime.
84. (7x238)+1=1667 is prime.
85. (7x242)-1=1693 is prime.
86. (7x244)+1=1709 is prime.
87. (7x246)-1=1721 is prime.
88. (7x246)+1=1723 is prime.
89. (7x254)-1=1777 is prime.
90. (7x264)-1=1847 is prime.
91. (7x266)-1=1861 is prime.
92. (7x268)+1=1877 is prime.
93. (7x270)-1=1889 is prime.
94. (7x276)-1=1931 is prime.
95. (7x276)+1=1933 is prime.
96. (7x282)-1=1973 is prime.
97. (7x284)-1=1987 is prime.
98. (7x286)+1=2003 is prime.
99. (7x288)+1=2017 is prime.
100. (7x290)-1=2029 is prime.
101. (7x298)+1=2087 is prime.
102. (7x300)-1=2099 is prime.
103. (7x302)-1=2113 is prime.
104. (7x304)+1=2129 is prime.
105. (7x306)-1=2141 is prime.
106. (7x306)+1=2143 is prime.
107. (7x316)+1=2213 is prime.
108. (7x320)-1=2239 is prime.
109. (7x324)-1=2267 is prime.
110. (7x324)+1=2269 is prime.
111. (7x326)-1=2281 is prime.
112. (7x328)+1=2297 is prime.
113. (7x330)-1=2309 is prime.
114. (7x330)+1=2311 is prime.
115. (7x334)+1=2339 is prime.
116. (7x336)-1=2351 is prime.
117. (7x340)+1=2381 is prime.
118. (7x342)-1=2393 is prime.
119. (7x346)+1=2423 is prime.
120. (7x348)+1=2437 is prime.
121. (7x354)-1=2477 is prime.
122. (7x360)+1=2521 is prime.
123. (7x364)+1=2549 is prime.
124. (7x370)+1=2591 is prime.
125. (7x374)-1=2617 is prime.
126. (7x376)+1=2633 is prime.
127. (7x378)+1=2647 is prime.
128. (7x380)-1=2659 is prime.
129. (7x384)-1=2687 is prime.
130. (7x384)+1=2689 is prime.
131. (7x390)-1=2729 is prime.
132. (7x390)+1=2731 is prime.
133. (7x400)+1=2801 is prime.
134. (7x406)+1=2843 is prime.
135. (7x408)+1=2857 is prime.
136. (7x414)-1=2897 is prime.
137. (7x418)+1=2927 is prime.
138. (7x420)-1=2939 is prime.
139. (7x422)-1=2953 is prime.
140. (7x424)+1=2969 is prime.
141. (7x430)+1=3011 is prime.
142. (7x432)-1=3023 is prime.
143. (7x434)-1=3037 is prime.
144. (7x438)+1=3067 is prime.
145. (7x440)-1=3079 is prime.
146. (7x444)+1=3109 is prime.
147. (7x446)-1=3121 is prime.
148. (7x448)+1=3137 is prime.
149. (7x452)-1=3163 is prime.
150. (7x456)-1=3191 is prime.
151. (7x460)+1=3221 is prime.
152. (7x474)+1=3319 is prime.
153. (7x476)-1=3331 is prime.
154. (7x478)+1=3347 is prime.
155. (7x480)-1=3359 is prime.
156. (7x480)+1=3361 is prime.
157. (7x482)-1=3373 is prime.
158. (7x484)+1=3389 is prime.
159. (7x494)-1=3457 is prime.
160. (7x500)-1=3499 is prime.
161. (7x504)-1=3527 is prime.
162. (7x504)+1=3529 is prime.
163. (7x506)-1=3541 is prime.
164. (7x508)+1=3557 is prime.
165. (7x510)+1=3571 is prime.
166. (7x512)-1=3583 is prime.
167. (7x516)+1=3613 is prime.
168. (7x528)+1=3697 is prime.
169. (7x530)-1=3709 is prime.
170. (7x534)+1=3739 is prime.
171. (7x538)+1=3767 is prime.
172. (7x540)-1=3779 is prime.
173. (7x542)-1=3793 is prime.
174. (7x546)-1=3821 is prime.
175. (7x546)+1=3823 is prime.
176. (7x550)+1=3851 is prime.
177. (7x552)-1=3863 is prime.
178. (7x554)-1=3877 is prime.
179. (7x558)+1=3907 is prime.
180. (7x560)-1=3919 is prime.
181. (7x564)-1=3947 is prime.
182. (7x570)-1=3989 is prime.
183. (7x572)-1=4003 is prime.
184. (7x574)+1=4019 is prime.
185. (7x582)-1=4073 is prime.
186. (7x590)-1=4129 is prime.
187. (7x594)-1=4157 is prime.
188. (7x594)+1=4159 is prime.
189. (7x600)+1=4201 is prime.
190. (7x604)+1=4229 is prime.
191. (7x606)-1=4241 is prime.
192. (7x606)+1=4243 is prime.
193. (7x610)+1=4271 is prime.
194. (7x612)-1=4283 is prime.
195. (7x614)-1=4297 is prime.
196. (7x618)+1=4327 is prime.
197. (7x620)-1=4339 is prime.
198. (7x628)+1=4397 is prime.
199. (7x630)-1=4409 is prime.
200. (7x632)-1=4423 is prime.
201. (7x636)-1=4451 is prime.
202. (7x640)+1=4481 is prime.
203. (7x642)-1=4493 is prime.
204. (7x644)-1=4507 is prime.
205. (7x646)+1=4523 is prime.
206. (7x650)-1=4549 is prime.
207. (7x656)-1=4591 is prime.
208. (7x660)+1=4621 is prime.
209. (7x664)+1=4649 is prime.
210. (7x666)+1=4663 is prime.
211. (7x670)+1=4691 is prime.
212. (7x672)-1=4703 is prime.
213. (7x676)+1=4733 is prime.
214. (7x680)-1=4759 is prime.
215. (7x684)-1=4787 is prime.
216. (7x684)+1=4789 is prime.
217. (7x686)-1=4801 is prime.
218. (7x688)+1=4817 is prime.
219. (7x690)+1=4831 is prime.
220. (7x696)-1=4871 is prime.
221. (7x706)+1=4943 is prime.
222. (7x708)+1=4957 is prime.
223. (7x710)-1=4969 is prime.
224. (7x714)+1=4999 is prime.
225. (7x716)-1=5011 is prime.
226. (7x720)-1=5039 is prime.
227. (7x726)-1=5081 is prime.
228. (7x736)+1=5153 is prime.
229. (7x738)+1=5167 is prime.
230. (7x740)-1=5179 is prime.
231. (7x744)+1=5209 is prime.
232. (7x748)+1=5237 is prime.
233. (7x754)+1=5279 is prime.
234. (7x762)-1=5333 is prime.
235. (7x764)-1=5347 is prime.
236. (7x774)-1=5417 is prime.
237. (7x774)+1=5419 is prime.
238. (7x776)-1=5431 is prime.
239. (7x786)-1=5501 is prime.
240. (7x786)+1=5503 is prime.
241. (7x790)+1=5531 is prime.
242. (7x794)-1=5557 is prime.
243. (7x796)+1=5573 is prime.
244. (7x806)-1=5641 is prime.
245. (7x808)+1=5657 is prime.
246. (7x810)-1=5669 is prime.
247. (7x812)-1=5683 is prime.
248. (7x816)-1=5711 is prime.
249. (7x820)+1=5741 is prime.
250. (7x826)+1=5783 is prime.
251. (7x834)+1=5839 is prime.
252. (7x836)-1=5851 is prime.
253. (7x838)+1=5867 is prime.
254. (7x840)-1=5879 is prime.
255. (7x840)+1=5881 is prime.
256. (7x846)+1=5923 is prime.
257. (7x858)+1=6007 is prime.
258. (7x864)-1=6047 is prime.
259. (7x870)-1=6089 is prime.
260. (7x870)+1=6091 is prime.
261. (7x876)-1=6131 is prime.
262. (7x876)+1=6133 is prime.
263. (7x882)-1=6173 is prime.
264. (7x886)+1=6203 is prime.
265. (7x888)+1=6217 is prime.
266. (7x890)-1=6229 is prime.
267. (7x894)-1=6257 is prime.
268. (7x896)-1=6271 is prime.
269. (7x898)+1=6287 is prime.
270. (7x900)-1=6299 is prime.
271. (7x900)+1=6301 is prime.
272. (7x904)+1=6329 is prime.
273. (7x906)+1=6343 is prime.
274. (7x914)-1=6397 is prime.
275. (7x918)+1=6427 is prime.
276. (7x924)+1=6469 is prime.
277. (7x926)-1=6481 is prime.
278. (7x936)-1=6551 is prime.
279. (7x936)+1=6553 is prime.
280. (7x940)+1=6581 is prime.
281. (7x944)-1=6607 is prime.
282. (7x948)+1=6637 is prime.
283. (7x954)+1=6679 is prime.
284. (7x956)-1=6691 is prime.
285. (7x960)-1=6719 is prime.
286. (7x962)-1=6733 is prime.
287. (7x966)-1=6761 is prime.
288. (7x966)+1=6763 is prime.
289. (7x970)+1=6791 is prime.
290. (7x972)-1=6803 is prime.
291. (7x976)+1=6833 is prime.
292. (7x988)+1=6917 is prime.
293. (7x994)+1=6959 is prime.
294. (7x996)-1=6971 is prime.
295. (7x1000)+1=7001 is prime.
7 295/2000
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