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Forum: No Prime Left Behind 2010-01-13, 13:24
Replies: 687
Views: 40,730
Posted By Mini-Geek
2563*2^525151-1 is prime! I seem to have much...

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...
Forum: No Prime Left Behind 2010-01-06, 00:33
Replies: 687
Views: 40,730
Posted By Mini-Geek
2753*2^525106-1 is prime! My first top-5000...

2753*2^525106-1 is prime!
My first top-5000 prime since August 2008, :smile: mostly because I've been doing CRUS work that's not at a very good size for finding top-5000 primes (either too small to...
Forum: No Prime Left Behind 2009-07-09, 12:05
Replies: 687
Views: 40,730
Posted By Mini-Geek
2619*2^440615-1 is prime! :toot: The first...

2619*2^440615-1 is prime! :toot:

The first top 5000 prime I've found since 2009-01-16. (had bad luck on the individual k's :sad: and I've been doing some sieving and factoring)
Forum: No Prime Left Behind 2009-01-21, 12:43
Replies: 687
Views: 40,730
Posted By Mini-Geek
What's the average weight (or combined weight or...

What's the average weight (or combined weight or something) of the k's in 1600-1700 vs the other k=100 ranges? Also, I'd bet that if somebody worked the math out, this is bound to happen some time...
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