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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
539887431079774879 ~1991
539888391079776799 ~1991
539889413239336479 ~1993
539908191079816399 ~1991
539910711079821439 ~1991
539946231079892479 ~1991
53995261259177252910 ~1995
539956191079912399 ~1991
539960511079921039 ~1991
539981631079963279 ~1991
539985231079970479 ~1991
539989914319919299 ~1993
539990694319925539 ~1993
539996511079993039 ~1991
540002631080005279 ~1991
54000769118801691910 ~1994
540015831080031679 ~1991
540017511080035039 ~1991
540021591080043199 ~1991
540024111080048239 ~1991
540028911080057839 ~1991
540044933240269599 ~1993
540051231080102479 ~1991
540055191080110399 ~1991
540056391080112799 ~1991
Exponent Prime Factor Digits Year
540075711080151439 ~1991
540081591080163199 ~1991
540087231080174479 ~1991
540096733240580399 ~1993
540107274320858179 ~1993
540111013240666079 ~1993
540115974320927779 ~1993
540119391080238799 ~1991
540127275401272719 ~1993
540127431080254879 ~1991
540153591080307199 ~1991
540155511080311039 ~1991
540166911080333839 ~1991
540172311080344639 ~1991
540173391080346799 ~1991
540183231080366479 ~1991
540187733241126399 ~1993
540200511080401039 ~1991
540205791080411599 ~1991
540208311080416639 ~1991
540212631080425279 ~1991
540214191080428399 ~1991
540217137563039839 ~1993
540220191080440399 ~1991
540225111080450239 ~1991
Exponent Prime Factor Digits Year
540237711080475439 ~1991
540239391080478799 ~1991
540244614321956899 ~1993
540252591080505199 ~1991
540267831080535679 ~1991
540274733241648399 ~1993
540280614322244899 ~1993
540284511080569039 ~1991
540289573241737439 ~1993
540295314322362499 ~1993
540308631080617279 ~1991
540315174322521379 ~1993
540322431080644879 ~1991
540332991080665999 ~1991
540333831080667679 ~1991
540339711080679439 ~1991
540351173242107039 ~1993
540370194322961539 ~1993
540370791080741599 ~1991
540382791080765599 ~1991
540392631080785279 ~1991
540398933242393599 ~1993
540406431080812879 ~1991
540407511080815039 ~1991
540420711080841439 ~1991
Exponent Prime Factor Digits Year
54042421216169684110 ~1995
540435733242614399 ~1993
540442614323540899 ~1993
540442791080885599 ~1991
540450831080901679 ~1991
540464031080928079 ~1991
540476333242857999 ~1993
540484431080968879 ~1991
540490311080980639 ~1991
540503173243019039 ~1993
540528111081056239 ~1991
540531591081063199 ~1991
540540831081081679 ~1991
540550311081100639 ~1991
540573714324589699 ~1993
540574911081149839 ~1991
540582294324658339 ~1993
540582978649327539 ~1994
54059293162177879110 ~1994
540596991081193999 ~1991
540605631081211279 ~1991
540611511081223039 ~1991
540623991081247999 ~1991
540628191081256399 ~1991
540632391081264799 ~1991
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26-07-19