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Small Mersenne Prime Factors
Prime numbers of the form Mp= 2p − 1 are called Mersenne primes. For Mp to be prime, p must also be prime.
Any factor q of a Mersenne number 2p − 1 must be of the form 2kp + 1, where integer k ≥ 0. Furthermore, q must be 1 or 7 mod 8.
Exponent Prime Factor Digits Year
18993911379878238 ~1988
189941811139650879 ~1989
18994379379887598 ~1988
189945971139675839 ~1989
189947713039163379 ~1990
18994823379896478 ~1988
189948411139690479 ~1989
189948834558771939 ~1990
189949791519598339 ~1989
189955331139731999 ~1989
189956234558949539 ~1990
18996011379920238 ~1988
18996311379926238 ~1988
189965391519723139 ~1989
18997019379940398 ~1988
18997031379940638 ~1988
189970313419465599
18997343379946878 ~1988
189973611519788899 ~1989
189974811139848879 ~1989
18998159379963198 ~1988
189989571519916579 ~1989
189990077599602819 ~1991
18999503379990078 ~1988
18999551379991038 ~1988
Exponent Prime Factor Digits Year
189996671899966719 ~1990
190001874560044899 ~1990
19000511380010238 ~1988
19000571380011438 ~1988
190005913420106399 ~1990
19001663380033278 ~1988
190020191900201919 ~1990
19002239380044798 ~1988
190024074560577699 ~1990
190032731140196399 ~1989
19003343380066878 ~1988
190034934560838339 ~1990
190036611140219679 ~1989
19004231380084638 ~1988
190047011140282079 ~1989
19004879380097598 ~1988
19005023380100478 ~1988
19006139380122798 ~1988
19006679380133598 ~1988
19006931380138638 ~1988
19006979380139598 ~1988
19007171380143438 ~1988
19007711380154238 ~1988
190077971140467839 ~1989
19008221163470700710 ~1992
Exponent Prime Factor Digits Year
19008263380165278 ~1988
19009583380191678 ~1988
19009751380195038 ~1988
19009811380196238 ~1988
19010291380205838 ~1988
190105011140630079 ~1989
19010759380215198 ~1988
190108991901089919 ~1990
19011131380222638 ~1988
190115831901158319 ~1990
19011743380234878 ~1988
190123731140742399 ~1989
19012583380251678 ~1988
190132371521058979 ~1989
19013279380265598 ~1988
19013363380267278 ~1988
19013411380268238 ~1988
19013999380279998 ~1988
190141611140849679 ~1989
190143791901437919 ~1990
190146134183214879 ~1990
19016111380322238 ~1988
19016243380324878 ~1988
19016351380327038 ~1988
19016887125511454310 ~1992
Exponent Prime Factor Digits Year
19016951380339038 ~1988
19017023380340478 ~1988
19017059380341198 ~1988
19017191380343838 ~1988
19017731380354638 ~1988
190178571141071439 ~1989
190178572263124983111
19017899380357998 ~1988
190181418748344879 ~1991
19018463380369278 ~1988
19018739380374798 ~1988
19018931380378638 ~1988
190191673423450079 ~1990
19019219380384398 ~1988
19019543380390878 ~1988
19019603380392078 ~1988
19019783380395678 ~1988
19020779380415598 ~1988
19020791380415838 ~1988
19021571380431438 ~1988
190219732663076239 ~1990
19022351380447038 ~1988
19022519380450398 ~1988
19022891380457838 ~1988
19024223380484478 ~1988
1401
GIMPS The Prime Pages FactorDb.com
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25-07-08