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2006-03-03, 05:27
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#221 |
Nov 2003
2×1,811 Posts |
grobie
Congrats on a nice prime! It's the best to counter false primes with real ones!  As for the composite by Thomas, let's hope it was a typo. |
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2006-03-03, 10:14
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#222 | |
Feb 2003
1,907 Posts |
no typo!
Quote:
 Code:
151*2^413621-1 is not prime. LLR Res64: 2485F228CAD65A7C Time : 490.694 sec. 151*2^413655-1 is not prime. LLR Res64: 6A9B2115DEC44054 Time : 490.661 sec. 151*2^413669-1 is not prime. LLR Res64: B2C573C33600C176 Time : 490.657 sec. 151*2^413705-1 is not prime. LLR Res64: F85D273D726BCAF7 Time : 490.840 sec. 151*2^413825-1 is not prime. LLR Res64: 02F7C33D065FC367 Time : 490.719 sec. 151*2^413933-1 is prime! Time : 490.991 sec. 151*2^413969-1 is not prime. LLR Res64: FBB6B1A7DAEFF386 Time : 491.058 sec. 151*2^413993-1 is not prime. LLR Res64: FE0D93A9A1C09A6C Time : 491.130 sec. 151*2^414113-1 is not prime. LLR Res64: E2A1F1EDDFBACC95 Time : 493.733 sec. 151*2^414215-1 is not prime. LLR Res64: D6B6E1417E929D50 Time : 491.800 sec. 151*2^414221-1 is not prime. LLR Res64: ADB287529B1B4171 Time : 493.508 sec. Code:
151*2^413933-1 is not prime. LLR Res64: 8440059416AD03E7 Time : 492.292 sec. I should add that I never had any problems on this machine. I'm using it for about 3 years now for finding quite a lot of "true" primes... Seems, that this problem isn't restricted to grobie's machine. And it doesn't seem to be SSE2 related, since on the Athlon LLR uses the non-SSE2 code. 
Last fiddled with by Thomas11 on 2006-03-03 at 10:16 |
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2006-03-03, 19:58
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#223 |
Nov 2004
California
23·3·71 Posts |
1694614845*2^315949-1 (95120 digits)
(confirmed PRP with pfgw  )
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2006-03-04, 14:51
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#224 |
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Feb 2003
1,907 Posts |
Another pair of primes:
155*2^310312-1 (93416 digits) 155*2^310622-1 (93509 digits) I verified them on a second machine, let's see Chris Caldwell's final check... |
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2006-03-04, 15:23
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#225 |
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Nov 2003
2·1,811 Posts |
They were just confirmed to be primes.
A nice pair of neigbours, congrats!
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2006-03-04, 21:55
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#226 |
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I quite division it
"Chris"
Feb 2005
England
207710 Posts |
125*2^418034-1 is prime.
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2006-03-04, 22:05
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#227 |
Jun 2004
11010102 Posts |
199*2^263051-1 is prime!
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2006-03-05, 01:14
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#228 |
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Nov 2004
California
23×3×71 Posts |
From choose your own k
22932195*2^437820-1 (131805 digits) |
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2006-03-05, 12:05
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#229 |
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Jun 2004
6A16 Posts |
93*2^362268-1 is prime!
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2006-03-06, 09:37
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#230 |
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Feb 2003
1,907 Posts |
155*2^353384-1 (106382 digits)
155*2^374288-1 (112675 digits) 155*2^496604-1 (149495 digits) 161*2^371426-1 (111813 digits) 
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2006-03-06, 11:01
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#231 |
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Nov 2003
E2616 Posts |
Nice primes Thomas! k=155 is so prolific but not so high weight, for example less then k=23 which has just a few primes.
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