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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
20938811418776238 ~1988
209388111675104899
20939123418782478 ~1988
20939459418789198 ~1988
20939603418792078 ~1988
209397715444340479 ~1991
20940383418807678 ~1988
20940539418810798 ~1988
20940611418812238 ~1988
209410872094108719 ~1990
20942951418859038 ~1988
20943203418864078 ~1988
20943551418871038 ~1988
20943911418878238 ~1988
20944043418880878 ~1988
20944151418883038 ~1988
20944883418897678 ~1988
20945363418907278 ~1988
20945399418907998 ~1988
20945471418909438 ~1988
209455376283661119 ~1991
20945843418916878 ~1988
20947499418949998 ~1988
209475292932654079 ~1990
20947631418952638 ~1988
Exponent Prime Factor Digits Year
209476371675810979 ~1990
20947739418954798 ~1988
20948579418971598 ~1988
20948639418972798 ~1988
20948891418977838 ~1988
20949563418991278 ~1988
20949611418992238 ~1988
20949671418993438 ~1988
20949683418993678 ~1988
209497371256984239 ~1989
20950031419000638 ~1988
20950463419009278 ~1988
20950691419013838 ~1988
20950703419014078 ~1988
20950883419017678 ~1988
20950883972120971310
20951279419025598 ~1988
20951291419025838 ~1988
20951351419027038 ~1988
209521675447563439 ~1991
20952359419047198 ~1988
20952479419049598 ~1988
209525211257151279 ~1989
209525211676201699
20952719419054398 ~1988
Exponent Prime Factor Digits Year
20952863419057278 ~1988
20952923419058478 ~1988
20952983419059678 ~1988
20953463419069278 ~1988
209536334609799279 ~1991
20953811419076238 ~1988
209538411257230479 ~1989
20953871419077438 ~1988
20954243419084878 ~1988
20954579419091598 ~1988
20954639419092798 ~1988
209547073352753139 ~1990
209548075448249839 ~1991
20955563419111278 ~1988
20955743419114878 ~1988
209558771257352639 ~1989
209559711676477699 ~1990
20956283419125678 ~1988
20956343419126878 ~1988
20956583419131678 ~1988
209566793772202239 ~1990
209569637125367439 ~1991
209571771257430639 ~1989
20957819419156398 ~1988
20958023419160478 ~1988
Exponent Prime Factor Digits Year
20958251419165038 ~1988
209585571257513439 ~1989
20958803419176078 ~1988
209589072095890719 ~1990
209589611257537679 ~1989
209590211257541279 ~1989
20959091419181838 ~1988
20959331419186638 ~1988
20959511201211305710 ~1992
20960183419203678 ~1988
20960339419206798 ~1988
209604133353666099 ~1990
209608931257653599 ~1989
209611211257667279 ~1989
20961131419222638 ~1988
209615298384611619 ~1991
209615592096155919 ~1990
20961779419235598 ~1988
20961851419237038 ~1988
20962031419240638 ~1988
20962163419243278 ~1988
20962307188660763110 ~1992
20962391419247838 ~1988
20962631419252638 ~1988
20962811368945473710 ~1993
1445
GIMPS The Prime Pages FactorDb.com
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25-04-13