Forum: Math
2005-01-27, 23:18
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Replies: 3
Views: 670
Indeed, there is.
In 1939 J. Chernick...
Indeed, there is.
In 1939 J. Chernick introduced the formula
U_k(m) = (6m+1) x (12m+1) x Product[i=1..k-2, (9 x 2^i x m + 1)]
is a carmichael number with k factors if all factors are prime....
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Forum: Math
2005-01-23, 17:14
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Replies: 9
Views: 1,057
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Forum: Math
2005-01-22, 08:26
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Replies: 9
Views: 1,057
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Forum: Miscellaneous Math
2004-11-28, 21:34
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Replies: 12
Views: 3,323
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Forum: Math
2004-10-26, 13:50
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Replies: 9
Views: 3,575
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Forum: Math
2004-10-25, 22:57
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Replies: 9
Views: 3,575
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Forum: Math
2004-10-24, 23:37
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Replies: 9
Views: 3,575
Okay, then here is my list (except the three I...
Okay, then here is my list (except the three I already posted):
5,937,528,071,298,337 divides M79,301,333
14,442,281,421,126,743 divides M79,302,799
17,799,362,728,236,577 divides M79,302,869...
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Forum: Math
2004-10-24, 20:59
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Replies: 9
Views: 3,575
Okay, thanks about that one. I downloaded the...
Okay, thanks about that one. I downloaded the files, decomp'd them and removed all factors from my database - below 79,3M, to be exact. But I have still 21 exponents beyond this which are not on the...
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Forum: Math
2004-10-23, 16:46
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Replies: 9
Views: 3,575
New factors?
Hello, I am new to this forum and I have the following problem:
I have written a program for sieving Mersenne numbers and of course found a few factors. To my dishonour I must confess that I only...
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