mersenneforum.org - P-1 finding multiple factors at once?

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mnd9	2019-12-04 14:15

P-1 finding multiple factors at once?

I hadn't seen this happen before but it seems a P-1 I recently ran found two factors simultaneously:

[url]https://www.mersenne.org/report_exponent/?exp_lo=7375339&full=1[/url]

At first I was excited that I found a huge ~140 bit factor (this is how the result was reported). I wasn't aware that this would happen so just found it interesting...

masser

2019-12-04 15:37

Nice find!

Same thing happened to me recently:

[URL="https://mersenneforum.org/showpost.php?p=531624&postcount=33"]https://mersenneforum.org/showpost.php?p=531624&postcount=33[/URL]

petrw1

2019-12-04 16:27

Its not that uncommon.
I've had several cases where the P-1 "factor" found turns out to be composite.

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