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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
198923931193543599 ~1989
19892759397855198 ~1988
19893299397865998 ~1988
19893479397869598 ~1988
19893719397874398 ~1988
19893803397876078 ~1988
198938515172401279 ~1991
19894223397884478 ~1988
198951531193709199 ~1989
198952631989526319 ~1990
19895303397906078 ~1988
198954531193727199 ~1989
19895651397913038 ~1988
19896419397928398 ~1988
198966891591735139 ~1989
19897079397941598 ~1988
19897271397945438 ~1988
19897331397946638 ~1988
19897343397946878 ~1988
19897859397957198 ~1988
198979511989795119 ~1990
19898159397963198 ~1988
198983571193901439 ~1989
19898471397969438 ~1988
19898603397972078 ~1988
Exponent Prime Factor Digits Year
19898639397972798 ~1988
19898663397973278 ~1988
198987014377714239 ~1991
19898771397975438 ~1988
19899791397995838 ~1988
198997911591983299
198997931193987599 ~1989
198998331193989999 ~1989
19899947254719321710 ~1992
19899983397999678 ~1988
19900379398007598 ~1988
19900739398014798 ~1988
19901363398027278 ~1988
199015371592122979 ~1989
19901663398033278 ~1988
19901723398034478 ~1988
199017731194106399 ~1989
19902119398042398 ~1988
19902203398044078 ~1988
199026431990264319 ~1990
199028531194171199 ~1989
199030211194181279 ~1989
199033971194203839 ~1989
19903451398069038 ~1988
19903619398072398 ~1988
Exponent Prime Factor Digits Year
19904051398081038 ~1988
19904999398099998 ~1988
19905191398103838 ~1988
19905251398105038 ~1988
19905491398109838 ~1988
19905719398114398 ~1988
19905779398115598 ~1988
19905911398118238 ~1988
19906079398121598 ~1988
199066331194397999 ~1989
19906811398136238 ~1988
199069935972097919 ~1991
19907291398145838 ~1988
19907423398148478 ~1988
199079811592638499 ~1989
19907999398159998 ~1988
19908023398160478 ~1988
19908611398172238 ~1988
19908743398174878 ~1988
199087971194527839 ~1989
199091572787281999 ~1990
199095073583711279 ~1990
19909679398193598 ~1988
19909859398197198 ~1988
19909931398198638 ~1988
Exponent Prime Factor Digits Year
199100572787407999 ~1990
199102375973071119 ~1991
199103697565940239 ~1991
199108331194649999 ~1989
19910903398218078 ~1988
199111211194667279 ~1989
19911431398228638 ~1988
19911659398233198 ~1988
199125171593001379 ~1989
19912811398256238 ~1988
19913303398266078 ~1988
19913951398279038 ~1988
19914311398286238 ~1988
19914959398299198 ~1988
19915403398308078 ~1988
19915523398310478 ~1988
19915691398313838 ~1988
19916003398320078 ~1988
19916483398329678 ~1988
199166713186667379 ~1990
199167131195002799 ~1989
199173615975208319 ~1991
19917743398354878 ~1988
19917851398357038 ~1988
19917959398359198 ~1988
1460
GIMPS The Prime Pages FactorDb.com
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25-10-20