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-   -   Report top-5000 primes for k=1003-3000 (https://www.mersenneforum.org/showthread.php?t=11246)

gd_barnes 2010-01-10 02:22

2611*2^523299-1 is prime
2625*2^523524-1 is prime
2397*2^524086-1 is prime

Mini-Geek 2010-01-13 13:24

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...

mdettweiler 2010-01-13 16:51

[quote=Mini-Geek;201744]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...[/quote]
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. :smile: NPLB, on the other hand, is searching a very large contiguous k-range, which is quite ideal for finding lots of primes.

gd_barnes 2010-01-16 21:07

1731*2^667435-1 is prime
1875*2^667853-1 is prime

vaughan 2010-01-19 05:31

1879*2^668517-1 is prime. Found by my little ASUS eeePC 701 :smile:

henryzz 2010-01-19 16:22

[quote=vaughan;202375]1879*2^668517-1 is prime. Found by my little ASUS eeePC 701 :smile:[/quote]
impressive for such a slow pc:smile:

gd_barnes 2010-01-21 05:49

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

vaughan 2010-01-29 01:46

2445*2^528423-1 already in database

vaughan 2010-01-29 08:54

2429*2^528680-1 is prime

vaughan 2010-01-29 10:28

2575*2^528713-1 is prime

gd_barnes 2010-01-30 11:00

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


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