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 Showing results 1 to 9 of 9 Search took 0.01 seconds. Search: Posts Made By: Yogi
 Forum: Math 2005-01-27, 23:18 Replies: 3 Views: 542 Posted By Yogi 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....
 Forum: Math 2005-01-23, 17:14 Replies: 9 Views: 864 Posted By Yogi Not really, since I used a self written program.... Not really, since I used a self written program. I attached it (in case you want to see it). I know it's not optimal, but it works. And before I forget: You'll need NTL (Number theoretic library...
 Forum: Math 2005-01-22, 08:26 Replies: 9 Views: 864 Posted By Yogi What about 2 + 1 is divisable by 3? The... What about 2 + 1 is divisable by 3? The only examples I know are 1459 and 2999 (checked through 2454587).
 Forum: Miscellaneous Math 2004-11-28, 21:34 Replies: 12 Views: 2,355 Posted By Yogi If he restricts x to be greater 1, than this is... If he restricts x to be greater 1, than this is correct and trivially x² + 2nx (for n natural) is always divisable by x. This looks like sieving out composites, which yields of course all prime...
 Forum: Math 2004-10-26, 13:50 Replies: 9 Views: 2,897 Posted By Yogi :redface: Yeah, I know. I sent it again, i hope... :redface: Yeah, I know. I sent it again, i hope it will work now.
 Forum: Math 2004-10-25, 22:57 Replies: 9 Views: 2,897 Posted By Yogi I send it to your address. Did you get it, or was... I send it to your address. Did you get it, or was it that bad ?
 Forum: Math 2004-10-24, 23:37 Replies: 9 Views: 2,897 Posted By Yogi 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...
 Forum: Math 2004-10-24, 20:59 Replies: 9 Views: 2,897 Posted By Yogi 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...
 Forum: Math 2004-10-23, 16:46 Replies: 9 Views: 2,897 Posted By Yogi 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...
 Showing results 1 to 9 of 9

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