I ran ECM with B1=3e6 on 105 exponents from M8831 to M9973.
These factors were found:
M8929 1115430961341245177793296572392840751 (ECM curve 777)
M8963 12102907522238912136363264325152257671 (ECM curve 94)
M9043 1214227396319818076542537632130381319 (ECM curve 1944)
M9241 42833623397271509550058451923527601 (ECM curve 154)
M9323 1333520398848362959146986064051807672224671 (ECM curve 3075)
M9539 223212586274489597961708131344467984319 (ECM curve 244)
M9539 539739762366037934978545147421430377 (ECM curve 195)
M9833 489061585821401691783649055431739696807 (ECM curve 932)
M9883 450826387535591546789201943375206602903 (ECM curve 2170)

[QUOTE=heliosh;490708]I ran ECM with B1=3e6 on 105 exponents from M8831 to M9973.
These factors were found:
M8929 1115430961341245177793296572392840751 (ECM curve 777)
M8963 12102907522238912136363264325152257671 (ECM curve 94)
M9043 1214227396319818076542537632130381319 (ECM curve 1944)
M9241 42833623397271509550058451923527601 (ECM curve 154)
M9323 1333520398848362959146986064051807672224671 (ECM curve 3075)
M9539 223212586274489597961708131344467984319 (ECM curve 244)
M9539 539739762366037934978545147421430377 (ECM curve 195)
M9833 489061585821401691783649055431739696807 (ECM curve 932)
M9883 450826387535591546789201943375206602903 (ECM curve 2170)[/QUOTE]

Cool....maybe you can have the same luck with some small exponents with NO factors yet.

I'd have to buy more luck for that, to avoid getting bored.

[URL="https://www.mersenne.org/report_exponent/?exp_lo=31817&full=1"]M31817[/URL] has some factors:

312876296180312279168622885407233 discovered 2018-[B]05-29[/B] by kkmrkkblmbrbk
61616511924264545425643699355785809 discoverd 2018-[B]05-30[/B] by kkmrkkblmbrbk
265196408951138298839977855543644017 discovered 2018-[B]05-30[/B] by me
24120390327081671517843130891211537004871 discoverd [B]today[/B] by me


That's 4 new factors >100 bits in 2 months. Together with the previously known ones, that's a total of [URL="http://www.mersenne.ca/manyfactors.php"]9 known factors[/URL].

[QUOTE=nordi;492226][URL="https://www.mersenne.org/report_exponent/?exp_lo=31817&full=1"]M31817[/URL] has some factors:

312876296180312279168622885407233 discovered 2018-[B]05-29[/B] by kkmrkkblmbrbk
61616511924264545425643699355785809 discoverd 2018-[B]05-30[/B] by kkmrkkblmbrbk
265196408951138298839977855543644017 discovered 2018-[B]05-30[/B] by me
24120390327081671517843130891211537004871 discoverd [B]today[/B] by me


That's 4 new factors >100 bits in 2 months. Together with the previously known ones, that's a total of [URL="http://www.mersenne.ca/manyfactors.php"]9 known factors[/URL].[/QUOTE]


Remaining cofactor is composite. Anyway, nice factors. :smile:

P-1 found a factor in stage #2, B1=710000, B2=12957500.
UID: Jwb52z/Clay, M88182361 has a factor: 261097855288862092613113 (P-1, B1=710000, B2=12957500)

77.789 bits.

Seems we missed a very small factor.
 

[url]www.mersenne.org/report_exponent/?exp_lo=32077&full=1[/url]

Even TJAOI missed it

Why do you think that's a new factor? It's been known since the before-time (there is no date associated with it in my data, so it's at least older than 2012).
Three PRP tests were done in 2017-Sep with that as a known factor.

[QUOTE=James Heinrich;493155]Why do you think that's a new factor? It's been known since the before-time (there is no date associated with it in my data, so it's at least older than 2012).
Three PRP tests were done in 2017-Sep with that as a known factor.[/QUOTE]

I ASS-umed it was new because ANONYMOUS reported it today.

Incidentally, impossibly high B2 ?!

[QUOTE=axn;493187]Incidentally, impossibly high B2 ?![/QUOTE]Probably not coincidentally, that B2 value is 2[sup]64[/sup]. How or why I don't know, but it's not a storage-regurgitation error, that's the B2 value in the submitted result line. The result line also contains a user/computer ID, and an assignment ID, I'm not sure why the result was submitted anonymously.