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-   -   How does the trial factoring work with 15K*2^n-1 (https://www.mersenneforum.org/showthread.php?t=809)

jocelynl 2003-07-11 14:23

How does the trial factoring work with 15K*2^n-1
 
is there a special form for factors in 15K*2^n-1 like the one in 2^p-1

(2kp+1) | 2^p-1

And is there properties like 1 or 7 mod 8?


joss


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