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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
21268631425372638 ~1988
21269639425392798 ~1988
212697131276182799 ~1989
21269879425397598 ~1988
21269903425398078 ~1988
21270971425419438 ~1988
21271259425425198 ~1988
212712591701700739
21271643425432878 ~1988
21271931425438638 ~1988
21272099425441998 ~1988
21272291425445838 ~1988
21272483425449678 ~1988
21272579425451598 ~1988
21273503425470078 ~1988
21273611425472238 ~1988
21274031425480638 ~1988
212740675531257439 ~1991
212741331276447999 ~1989
21274283425485678 ~1988
21274343425486878 ~1988
212743992127439919 ~1990
212744391701955139 ~1990
21274763425495278 ~1988
212752033404032499 ~1990
Exponent Prime Factor Digits Year
212752811276516879 ~1989
21275399425507998 ~1988
21275651425513038 ~1988
21275711425514238 ~1988
21276071425521438 ~1988
21276263425525278 ~1988
212763772978692799 ~1990
212769498510779619 ~1991
212770211276621279 ~1989
21277043425540878 ~1988
212776397234397279 ~1991
212776675532193439 ~1991
21277979425559598 ~1988
21278063425561278 ~1988
21278171425563438 ~1988
21278711425574238 ~1988
21278819425576398 ~1988
212793312127933119 ~1990
212797372979163199 ~1990
21279959425599198 ~1988
21280423544778828910 ~1993
21281651425633038 ~1988
21281783425635678 ~1988
21281891425637838 ~1988
21282083425641678 ~1988
Exponent Prime Factor Digits Year
21282263425645278 ~1988
212824671702597379 ~1990
212827272128272719 ~1990
21282743425654878 ~1988
21283039238370036910 ~1992
21283511425670238 ~1988
21283523425670478 ~1988
21283859425677198 ~1988
21283919425678398 ~1988
21284339425686798 ~1988
212845331277071999 ~1989
21284723425694478 ~1988
212849873831297679 ~1991
212851796811257299 ~1991
21285311425706238 ~1988
212866736386001919 ~1991
21286691425733838 ~1988
21286823425736478 ~1988
21286943425738878 ~1988
212870896386126719 ~1991
21287243425744878 ~1988
21287411425748238 ~1988
21287879425757598 ~1988
21288083425761678 ~1988
212884731277308399 ~1989
Exponent Prime Factor Digits Year
21288551425771038 ~1988
21289259425785198 ~1988
21289643425792878 ~1988
21289679425793598 ~1988
21290303425806078 ~1988
21290999425819998 ~1988
21291383425827678 ~1988
21291503425830078 ~1988
21291971425839438 ~1988
21292343425846878 ~1988
21292391425847838 ~1988
212926811277560879 ~1989
21293399425867998 ~1988
21293939425878798 ~1988
21294491425889838 ~1988
212953032129530319 ~1990
212953492981348879 ~1990
212953611277721679 ~1989
212958011277748079 ~1989
21296111425922238 ~1988
212963331277779999 ~1989
21296651425933038 ~1988
21296939425938798 ~1988
21297131425942638 ~1988
21297203425944078 ~1988
1408
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24-10-27