Don't Miss The First RPS Team Drive! - Page 16

lsoule · 2005-12-22, 17:52

2655-2660 complete, no primes

lsoule · 2005-12-23, 01:07

2675-2680 complete, one prime (870667875 267981)
Taking 2695-2700.

Kosmaj · 2005-12-23, 14:33

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.

NiceMedTexMD · 2005-12-25, 02:38

2685 to 2690 complete, no primes :(

Dr. Mike..

Kosmaj · 2005-12-25, 03:31

Yeah, no primes in your range, a major problem :surprised

But how about those 3 you reported yesterday?

Kosmaj · 2005-12-26, 07:03

2660-2665 complete, one prime already reported
804003525 266132

Taking 3 files: 2700-2715.

lsoule · 2005-12-26, 18:54

Taking 3 files: 2715-2730

Kosmaj · 2005-12-27, 02:04

2665-2670 complete, no primes.

An early prime at the 270k level:
1738812075 270036, 81299 digits

The 2nd prime for this k.

Kosmaj · 2005-12-28, 01:43

779602395*2^270175-1 is prime! 81340 digits

The first prime for this k :surprised and the 40th prime in this drive!

lsoule · 2005-12-29, 21:37

2720-2730 complete (2 files), 4 primes

1738812075 272308
870667875 272449
870667875 272494
918332415 272910

lsoule · 2005-12-29, 21:38

Taking 3 files: 2730-2745

2005-12-23, 14:33	#168
Kosmaj Nov 2003 7046₈ 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

2005-12-26, 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

2005-12-28, 01:43	#174
Kosmaj Nov 2003 2·1,811 Posts	7796023952^270175-1 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*

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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 3250₈ Posts	2675-2680 complete, one prime (870667875 267981) Taking 2695-2700.

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 2·1,811 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 2×1,811 Posts	2660-2665 complete, one prime already reported 804003525 266132 Taking 3 files: 2700-2715.

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.

2005-12-29, 21:37	#175
lsoule Nov 2004 California 6A8₁₆ 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 2³·3·71 Posts	Taking 3 files: 2730-2745