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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
193894492714522879 ~1990
193902971163417839 ~1989
19390799387815998 ~1988
19391171387823438 ~1988
19391363387827278 ~1988
19392239387844798 ~1988
193922871551382979 ~1989
19392491387849838 ~1988
19392731387854638 ~1988
19393019387860398 ~1988
19393463387869278 ~1988
19393859387877198 ~1988
19394159387883198 ~1988
19394351387887038 ~1988
19394723387894478 ~1988
19395023387900478 ~1988
19395539387910798 ~1988
193955815818674319 ~1991
19395731387914638 ~1988
19395791387915838 ~1988
19395839387916798 ~1988
19396271387925438 ~1988
193966731163800399 ~1989
19397123387942478 ~1988
193972631939726319 ~1990
Exponent Prime Factor Digits Year
19397363387947278 ~1988
19397783387955678 ~1988
19398023387960478 ~1988
193981331163887999 ~1989
19398191387963838 ~1988
193983299311197939 ~1991
193983473491702479 ~1990
193989617759584419 ~1991
193990991939909919 ~1990
19399151387983038 ~1988
19399379387987598 ~1988
19399559387991198 ~1988
193999371163996239 ~1989
19400039388000798 ~1988
19400351388007038 ~1988
19400429139683088910 ~1992
19400819388016398 ~1988
19401359388027198 ~1988
19402079388041598 ~1988
194021931164131599 ~1989
19402199388043998 ~1988
19402583388051678 ~1988
19403231388064638 ~1988
19403963388079278 ~1988
19404227143591279910 ~1992
Exponent Prime Factor Digits Year
19404251388085038 ~1988
19404299388085998 ~1988
19404383388087678 ~1988
194049617761984419 ~1991
19405343388106878 ~1988
194065731164394399 ~1989
194065732716920239
194066635045732399 ~1991
194072474657739299 ~1991
194073371164440239 ~1989
19407431388148638 ~1988
19407623388152478 ~1988
194077331164463999 ~1989
19407959388159198 ~1988
19408223388164478 ~1988
19408283388165678 ~1988
19408643388172878 ~1988
194087713105403379 ~1990
19409063388181278 ~1988
19409339388186798 ~1988
19409399388187998 ~1988
19409471388189438 ~1988
19409759388195198 ~1988
194098371164590239 ~1989
19410119388202398 ~1988
Exponent Prime Factor Digits Year
19410623388212478 ~1988
19411499388229998 ~1988
194117713494118799 ~1990
19412219388244398 ~1988
194122273105956339 ~1990
19412303388246078 ~1988
19412663388253278 ~1988
19413071388261438 ~1988
19413263388265278 ~1988
19413323388266478 ~1988
19413503388270078 ~1988
19413671388273438 ~1988
19414379388287598 ~1988
19414511388290238 ~1988
194145671941456719 ~1990
19414859388297198 ~1988
19414883388297678 ~1988
194150411164902479 ~1989
19415531388310638 ~1988
19415699388313998 ~1988
19416011388320238 ~1988
19416191388323838 ~1988
194163771553310179 ~1989
19417319388346398 ~1988
19417523388350478 ~1988
1398
GIMPS The Prime Pages FactorDb.com
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25-05-04