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 2005-12-22, 17:52 #166 lsoule     Nov 2004 California 23·3·71 Posts 2655-2660 complete, no primes
 2005-12-23, 01:07 #167 lsoule     Nov 2004 California 23·3·71 Posts 2675-2680 complete, one prime (870667875 267981) Taking 2695-2700.
 2005-12-23, 14:33 #168 Kosmaj     Nov 2003 2×1,811 Posts New files in the 270-280k range sieved to 2150bn are now available. BTW, here is the number of candidates per k in the 270-280k range sorted in their decresing order together with the number of primes found so far. Code: k #cand #primes 870667875 1461 4 1952775825 1455 3 804003525 1415 3 460735275 1408 3 3467560635 1403 0 918332415 1367 4 697942245 1310 2 2022381375 1303 5 1738812075 1291 1 1626176475 1285 2 779602395 1283 0 1694614845 1278 3 663301485 1271 1 3276742755 1250 3 1325978745 1241 3 67342275 1211 1 Overall in the 200-400 range the order is slightly different but the first and the last k are the same. Observations: 1) k=3467560635 has a lot of candidates surviving sieving yet it is together with k=779602395 without primes. 2) k=2022381375 is in the middle by number of candidates but it produced the largest number of primes (5). 3) k=870667875 on the top produced many primes as expected (4). 4) k=3276742755 and k=1325978745 are near the bottom but with 3 primes each they are the most prolific. Last fiddled with by Kosmaj on 2005-12-23 at 14:36
 2005-12-25, 02:38 #169 NiceMedTexMD   Jun 2004 2×3×7 Posts 2685 to 2690 complete, no primes :( Dr. Mike..
 2005-12-25, 03:31 #170 Kosmaj     Nov 2003 70468 Posts Yeah, no primes in your range, a major problem :surprised But how about those 3 you reported yesterday?
 2005-12-26, 07:03 #171 Kosmaj     Nov 2003 70468 Posts 2660-2665 complete, one prime already reported 804003525 266132 Taking 3 files: 2700-2715.
 2005-12-26, 18:54 #172 lsoule     Nov 2004 California 32508 Posts Taking 3 files: 2715-2730 Last fiddled with by lsoule on 2005-12-26 at 19:06
 2005-12-27, 02:04 #173 Kosmaj     Nov 2003 70468 Posts 2665-2670 complete, no primes. An early prime at the 270k level: 1738812075 270036, 81299 digits The 2nd prime for this k.
 2005-12-28, 01:43 #174 Kosmaj     Nov 2003 70468 Posts 779602395*2^270175-1 is prime! 81340 digits The first prime for this k :surprised and the 40th prime in this drive! Last fiddled with by Kosmaj on 2005-12-28 at 01:51
 2005-12-29, 21:37 #175 lsoule     Nov 2004 California 170410 Posts 2720-2730 complete (2 files), 4 primes 1738812075 272308 870667875 272449 870667875 272494 918332415 272910
 2005-12-29, 21:38 #176 lsoule     Nov 2004 California 6A816 Posts Taking 3 files: 2730-2745

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