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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
39995159799903198 ~1990
39995639799912798 ~1990
39996431799928638 ~1990
39996683799933678 ~1990
39996899799937998 ~1990
399969972399819839 ~1992
39997019799940398 ~1990
39997043799940878 ~1990
39997511799950238 ~1990
39997823799956478 ~1990
39997871799957438 ~1990
39998111799962238 ~1990
39998243799964878 ~1990
39998663799973278 ~1990
39998891799977838 ~1990
39999023799980478 ~1990
39999143799982878 ~1990
39999203799984078 ~1990
39999779799995598 ~1990
39999803799996078 ~1990
40000223800004478 ~1990
40001231800024638 ~1990
40001303800026078 ~1990
400013594000135919 ~1992
400016572400099439 ~1992
Exponent Prime Factor Digits Year
40001771800035438 ~1990
40001999800039998 ~1990
40002659800053198 ~1990
40003391800067838 ~1990
40003511800070238 ~1990
400042034000420319 ~1992
40004351800087038 ~1990
40004483800089678 ~1990
40005011800100238 ~1990
40006931800138638 ~1990
400098412400590479 ~1992
40010011352088096910 ~1994
40010051800201038 ~1990
40010543800210878 ~1990
400110676401770739 ~1993
40011299800225998 ~1990
40011479800229598 ~1990
40011623800232478 ~1990
40014059800281198 ~1990
40014083800281678 ~1990
40014203800284078 ~1990
40014239800284798 ~1990
400146972400881839 ~1992
40014743800294878 ~1990
40014791800295838 ~1990
Exponent Prime Factor Digits Year
40015091800301838 ~1990
40015571800311438 ~1990
40016891800337838 ~1990
40017119800342398 ~1990
400173012401038079 ~1992
40017671800353438 ~1990
40018031800360638 ~1990
400182132401092799 ~1992
40018679800373598 ~1990
40018691800373838 ~1990
40018703800374078 ~1990
40018991800379838 ~1990
400194076403105139 ~1993
40019891800397838 ~1990
40019939800398798 ~1990
40020119800402398 ~1990
40020131800402638 ~1990
40020443800408878 ~1990
40020731800414638 ~1990
400208095602913279 ~1992
400208099604994179
40021211800424238 ~1990
40021259800425198 ~1990
400219732401318399 ~1992
400225034002250319 ~1992
Exponent Prime Factor Digits Year
40022903800458078 ~1990
40023143800462878 ~1990
40023551800471038 ~1990
40023911800478238 ~1990
400244234002442319 ~1992
40025171800503438 ~1990
40025519800510398 ~1990
400261973202095779 ~1992
40026599800531998 ~1990
40026659800533198 ~1990
40027079800541598 ~1990
40027283800545678 ~1990
40027763800555278 ~1990
400284772401708639 ~1992
40028519800570398 ~1990
400288372401730239 ~1992
40029851800597038 ~1990
40030043800600878 ~1990
400304213202433699 ~1992
400305916404894579 ~1993
40030751800615038 ~1990
400310291337036368711 ~1996
40031279800625598 ~1990
40031363800627278 ~1990
40031531800630638 ~1990
2141
GIMPS The Prime Pages FactorDb.com
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26-07-05