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Old 2004-05-10, 05:24   #1

5·29·31 Posts
Default Largest prime found yet by 15k search


7*2^372897-1 is prime
Proven by L32
Is over a 112000 digits long!

Just as we approach the one year anniversary of the 15k search!

Last fiddled with by Kosmaj on 2004-05-11 at 03:14
Old 2004-05-11, 03:04   #2
Kosmaj's Avatar
Nov 2003

1110001001102 Posts

Well, thanks! It's the second in a row, after n=363929
Of course 7 is not "15k" (unless k=1/2 in integer division!) but I got presieved values from Thomas. With the new LLR one can go through low values of n quickly. Will be even faster if the program is not wasting time on vainly guesses of the FFT lenght... But still, we cannot complain.

Last fiddled with by Kosmaj on 2004-05-11 at 03:06
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