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2010-09-11, 13:09
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#155 |
"Mark"
Apr 2003
Between here and the
2×32×353 Posts |
A reminder here to users of PFGW to upgrade to 3.3.6.
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2010-09-18, 17:37
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#156 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2×47×101 Posts |
8*3^896701-1 (427837 digits) is prime. (proves R729)
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2010-09-18, 18:17
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#157 |
May 2008
Wilmington, DE
22×23×31 Posts |
Nice one Serge.
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2010-09-18, 22:58
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#158 |
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May 2008
Wilmington, DE
22×23×31 Posts |
Sierp 893
8*893^86771+1 is prime http://primes.utm.edu/primes/page.php?id=95019
Conjecture proven - Results emailed Is this Prime Saturday? |
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2010-09-19, 05:48
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#159 | ||
May 2007
Kansas; USA
29×359 Posts |
Quote:
Quote:
Nice one Ian. 2 quick proofs in a row for you makes a total of 3 proofs today! Clarification: 8*3^896701-1 = 24*729^149450-1 Last fiddled with by gd_barnes on 2010-09-19 at 05:51 |
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2010-09-30, 11:53
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#160 |
Nov 2009
2×52×7 Posts |
Submitted this morning R31
Primality testing 37328*31^129973-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 3, base 1+sqrt(3) Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 37328*31^129973-1 is prime! (12989.0150s+0.0469s) |
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2010-09-30, 12:09
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#161 |
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May 2008
Wilmington, DE
285210 Posts |
Nice one Mathew. Your first for CRUS.
It also eliminated about 700 tests from the R31 run. 
Last fiddled with by MyDogBuster on 2010-09-30 at 12:10 |
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2010-10-01, 04:53
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#162 |
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May 2007
Kansas; USA
29·359 Posts |
Congrats Mathew. You were way overdue for one on the PRPnet drive.
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2010-10-01, 20:38
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#163 |
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Nov 2009
5368 Posts |
Thanks Gary like you said Sierpinski bases on PRPnet have not been kind.
MyDogBuster, I see you got so jealous you had to get a prime the very next day 
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2010-10-02, 00:23
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#164 | |
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May 2008
Wilmington, DE
22×23×31 Posts |
http://primes.utm.edu/primes/page.php?id=95199
101022*31^133208-1 is prime - conjecture has 4 k's left Quote:
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2010-10-02, 04:18
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#165 | |
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May 2007
Kansas; USA
29·359 Posts |
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R31 is becoming like R6. We may want to sieve this on up to n=250K and continue it for n=150K-250K. It would be nice to add such a high conjecture to the proven/1k/2k/3k thread.
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