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Old 2010-01-10, 02:22   #606
gd_barnes
 
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2611*2^523299-1 is prime
2625*2^523524-1 is prime
2397*2^524086-1 is prime

Last fiddled with by gd_barnes on 2010-01-12 at 08:15 Reason: add primes
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Old 2010-01-13, 13:24   #607
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2563*2^525151-1 is prime!
I seem to have much better luck on NPLB than CRUS. I wonder if this is just chance or if there's something unknown about prime distribution on base 2 vs other bases...
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Old 2010-01-13, 16:51   #608
mdettweiler
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Quote:
Originally Posted by Mini-Geek View Post
2563*2^525151-1 is prime!
I seem to have much better luck on NPLB than CRUS. I wonder if this is just chance or if there's something unknown about prime distribution on base 2 vs other bases...
It's probably not so much about the base as it is about the fact that CRUS's k's are extremely biased towards the low-weight end of the spectrum: after all, there's a reason why they've held on as long as they have without a prime. NPLB, on the other hand, is searching a very large contiguous k-range, which is quite ideal for finding lots of primes.
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Old 2010-01-16, 21:07   #609
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1731*2^667435-1 is prime
1875*2^667853-1 is prime

Last fiddled with by gd_barnes on 2010-01-18 at 03:17 Reason: add prime
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Old 2010-01-19, 05:31   #610
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1879*2^668517-1 is prime. Found by my little ASUS eeePC 701
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Old 2010-01-19, 16:22   #611
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Quote:
Originally Posted by vaughan View Post
1879*2^668517-1 is prime. Found by my little ASUS eeePC 701
impressive for such a slow pc
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Old 2010-01-21, 05:49   #612
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2223*2^525476-1 is prime
2643*2^525528-1 is prime
2715*2^525530-1 is confirmed prime
2691*2^525606-1 is prime
2717*2^526016-1 is prime
2829*2^526483-1 is prime
2941*2^526493-1 is confirmed prime
2183*2^527764-1 is prime
2537*2^528164-1 is prime

1549*2^669387-1 is prime

Last fiddled with by gd_barnes on 2010-01-28 at 11:21 Reason: add primes
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Old 2010-01-29, 01:46   #613
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2445*2^528423-1 already in database
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Old 2010-01-29, 08:54   #614
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2429*2^528680-1 is prime
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Old 2010-01-29, 10:28   #615
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2575*2^528713-1 is prime
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Old 2010-01-30, 11:00   #616
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2379*2^529181-1 is prime
2259*2^529340-1 is prime
2067*2^529888-1 is prime
2533*2^531163-1 is prime
2993*2^531362-1 is prime
2397*2^531494-1 is prime
2543*2^531924-1 is prime
2395*2^532313-1 is prime

Last fiddled with by gd_barnes on 2010-02-05 at 06:15 Reason: add primes
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