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-   -   (Preying for) World Record P-1! (https://www.mersenneforum.org/showthread.php?t=27406)

ewmayer 2022-05-25 22:34

[QUOTE=nordi;606366][M]M36919[/M] has a 180.968-bit (55-digit) factor: [URL="https://www.mersenne.ca/M36919"]2997347544642661833497896836795494793702018162645139063[/URL] (P-1,B1=2000000000,B2=401927737170960)


That gets me to the top of the [URL="https://www.mersenne.ca/userfactors/pm1/1/bits"]list of P-1 factors for Mersenne numbers[/URL]! And all thanks to the new version 30.8 of mprime.[/QUOTE]

Using the 3 now-known factors - a quite impressive collection - the cofactor is still composite [C11008], so this is no time to rest on your laurels. :)


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