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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
19909859398197198 ~1988
19909931398198638 ~1988
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
19917743398354878 ~1988
19917851398357038 ~1988
Exponent Prime Factor Digits Year
19917959398359198 ~1988
19918439398368798 ~1988
199184635178800399 ~1991
19919171398383438 ~1988
19919591398391838 ~1988
19920479398409598 ~1988
19920899398417998 ~1988
19921199398423998 ~1988
19921211398424238 ~1988
19921991398439838 ~1988
19922099398441998 ~1988
19922663398453278 ~1988
199229931195379599 ~1989
199232271593858179 ~1989
19923479398469598 ~1988
199237191593897539 ~1989
19923791398475838 ~1988
19923803398476078 ~1988
19924031398480638 ~1988
19924199398483998 ~1988
19924703131503039910 ~1992
19924763398495278 ~1988
199247831992478319 ~1990
19924823398496478 ~1988
199251191992511919 ~1990
Exponent Prime Factor Digits Year
19925123398502478 ~1988
19925183398503678 ~1988
19925723398514478 ~1988
19925881155421871910 ~1992
19925903398518078 ~1988
19926083398521678 ~1988
199260979166004639 ~1991
199262095977862719 ~1991
19926311398526238 ~1988
19927343398546878 ~1988
19927679398553598 ~1988
19928231398564638 ~1988
19928339398566798 ~1988
199283391594267139
199288276775801199 ~1991
19929443398588878 ~1988
199295092790131279 ~1990
19929599398591998 ~1988
19929743398594878 ~1988
19931111398622238 ~1988
19931459398629198 ~1988
19931819398636398 ~1988
19931843398636878 ~1988
199321131195926799 ~1989
19932119398642398 ~1988
Exponent Prime Factor Digits Year
19932359398647198 ~1988
199330131195980799 ~1989
19933079398661598 ~1988
19933943398678878 ~1988
19934171398683438 ~1988
19934423398688478 ~1988
199344411594755299 ~1989
19934903398698078 ~1988
19935719398714398 ~1988
19936211398724238 ~1988
19936271398725438 ~1988
19936739398734798 ~1988
199371311993713119 ~1990
19937531398750638 ~1988
19938179398763598 ~1988
19938839398776798 ~1988
199394831993948319 ~1990
19939511398790238 ~1988
19939583398791678 ~1988
19939763398795278 ~1988
19940363398807278 ~1988
199409331196455999 ~1989
19941419398828398 ~1988
19941683398833678 ~1988
199417211196503279 ~1989
1416
GIMPS The Prime Pages FactorDb.com
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25-05-04