Help test 2995125705 - Find a new top 5000 prime! - Page 17

Kosmaj · 2005-02-26, 09:49

I just put new ranges n=620-650k on the server. These are sieved to 9610 courtesy of segmtfault and lsoule. Thanks guys!

I created a short C program to partition the big file into small chunks and as an additional feature it can count the number of k/n pairs per file. The number varies a lot, between 277 and 345 pairs. BTW, in the 620k-1M range there are now 57055 candidates, or 300.2 per a 2k range.

Finally, I took liberty to reserve the first range, 620-622

To edorajh and SB2
When can we expect you guys to complete your reserved ranges? Can you kindly tell us what's the status of your search? Thanks!

lsoule · 2005-02-26, 15:57

616-618 complete, no primes.
Taking 622-624.

edorajh · 2005-02-27, 11:39

Quote:

Originally Posted by Kosmaj

To edorajh and SB2
When can we expect you guys to complete your reserved ranges? Can you kindly tell us what's the status of your search? Thanks!

I run it on my office computer. I am on a holiday now so I can't check the status. Also, since I'm on a holiday my office computer is turned off now. Once I start work again I will update you (10 days).

Primeinator · 2005-02-27, 18:42

I'm thinking about getting an AMD Athlon 64bit 2.4Ghz processor and a new computer. What do you mean by the ranges are too big to be processed by an AMD?- because that could be a big factor in whether or not I end up getting one.

Prime95 · 2005-02-27, 20:51

Quote:

Originally Posted by Primeinator

I'm thinking about getting an AMD Athlon 64bit 2.4Ghz processor and a new computer. What do you mean by the ranges are too big to be processed by an AMD?- because that could be a big factor in whether or not I end up getting one.

AMD Athlon 64 is a great chip for most applications. However, the Pentium 4 is faster at testing for prime numbers.

lsoule · 2005-02-28, 17:53

622-624 complete, no primes.
Takine 624-626.

segmtfault · 2005-03-02, 07:47

618-620 complete, no primes.
Taking 626-628.

lsoule · 2005-03-02, 13:19

624-626 complete, no primes.
Taking 628-630.

SB2 · 2005-03-03, 04:08

596,000 - 600,000 complete, no primes

taking

630to632.txt 345
632to634.txt 286
634to636.txt 307

SB2 · 2005-03-03, 09:42

Mistake on my part, only 596 to 598 was complete, 598 to 600 should be complete by this evening.

lsoule · 2005-03-03, 14:35

Found a prime! 2995125705*2^629062-1 (189377 digits)

2005-02-26, 09:49	#177
Kosmaj Nov 2003 2×1,811 Posts	Ranges 620-650 uploaded I just put new ranges n=620-650k on the server. These are sieved to 9610 courtesy of segmtfault and lsoule. Thanks guys! I created a short C program to partition the big file into small chunks and as an additional feature it can count the number of k/n pairs per file. The number varies a lot, between 277 and 345 pairs. BTW, in the 620k-1M range there are now 57055 candidates, or 300.2 per a 2k range. Finally, I took liberty to reserve the first range, 620-622 To edorajh and SB2 When can we expect you guys to complete your reserved ranges? Can you kindly tell us what's the status of your search? Thanks!

2005-02-27, 18:42	#180
Primeinator "Kyle" Feb 2005 Somewhere near M52.. 3×5×61 Posts	I'm thinking about getting an AMD Athlon 64bit 2.4Ghz processor and a new computer. What do you mean by the ranges are too big to be processed by an AMD?- because that could be a big factor in whether or not I end up getting one. Last fiddled with by Primeinator on 2005-02-27 at 18:42

2005-03-03, 04:08	#185
SB2 Jul 2003 72₁₆ Posts	596,000 - 600,000 complete, no primes taking 630to632.txt 345 632to634.txt 286 634to636.txt 307 Last fiddled with by SB2 on 2005-03-03 at 04:23

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2005-02-26, 15:57	#178
lsoule Nov 2004 California 2³·3·71 Posts	616-618 complete, no primes. Taking 622-624.

2005-02-28, 17:53	#182
lsoule Nov 2004 California 2³·3·71 Posts	622-624 complete, no primes. Takine 624-626.

2005-03-02, 07:47	#183
segmtfault Jun 2004 California 277 Posts	618-620 complete, no primes. Taking 626-628.

2005-03-02, 13:19	#184
lsoule Nov 2004 California 1704₁₀ Posts	624-626 complete, no primes. Taking 628-630.

2005-03-03, 09:42	#186
SB2 Jul 2003 2·3·19 Posts	Mistake on my part, only 596 to 598 was complete, 598 to 600 should be complete by this evening.

2005-03-03, 14:35	#187
lsoule Nov 2004 California 11010101000₂ Posts	Found a prime! 2995125705*2^629062-1 (189377 digits)