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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
638329911276659839 ~1992
638332613829995679 ~1993
63833593255334372110 ~1995
638343831276687679 ~1992
638350431276700879 ~1992
638359791276719599 ~1992
63837251114907051910 ~1994
638384031276768079 ~1992
638401311276802639 ~1992
638417631276835279 ~1992
638434311276868639 ~1992
638434431276868879 ~1992
638454231276908479 ~1992
638472133830832799 ~1993
638497431276994879 ~1992
638502111277004239 ~1992
638519991277039999 ~1992
638534631277069279 ~1992
638545191277090399 ~1992
638572431277144879 ~1992
638582511277165039 ~1992
638601231277202479 ~1992
638605791277211599 ~1992
638605911277211839 ~1992
63861431114950575910 ~1994
Exponent Prime Factor Digits Year
638625013831750079 ~1993
638646111277292239 ~1992
638647911277295839 ~1992
638653036386530319 ~1994
638661231277322479 ~1992
63867103102187364910 ~1994
638675391277350799 ~1992
638681173832087039 ~1993
638692378941693199 ~1994
638715413832292479 ~1993
638735875109886979 ~1993
638737311277474639 ~1992
638743031188062035911 ~1997
638753511277507039 ~1992
638761333832567999 ~1993
638772831277545679 ~1992
638784492095213127311 ~1997
638813991277627999 ~1992
638827791277655599 ~1992
638835173833011039 ~1993
638841231277682479 ~1992
638842813833056879 ~1993
638855391277710799 ~1992
638859111277718239 ~1992
638866311277732639 ~1992
Exponent Prime Factor Digits Year
638892111277784239 ~1992
638897391277794799 ~1992
638924631277849279 ~1992
638933631277867279 ~1992
638945991277891999 ~1992
638956973833741839 ~1993
638977911277955839 ~1992
638995333833971999 ~1993
638997231277994479 ~1992
639015831278031679 ~1992
639027711278055439 ~1992
639029631278059279 ~1992
63903769191711307110 ~1995
639039711278079439 ~1992
639048111278096239 ~1992
63906079153374589710 ~1995
639074391278148799 ~1992
63911821191735463110 ~1995
639118431278236879 ~1992
639122631278245279 ~1992
639169495113355939 ~1993
63918007370724440710 ~1996
639198111278396239 ~1992
639208191278416399 ~1992
639210831278421679 ~1992
Exponent Prime Factor Digits Year
639216775113734179 ~1993
639244075113952579 ~1993
639248773835492639 ~1993
639256396392563919 ~1994
639290573835743439 ~1993
63930949140648087910 ~1994
639324711278649439 ~1992
639329515114636099 ~1993
63938317102301307310 ~1994
63938507421994146310 ~1996
639390591278781199 ~1992
639401413836408479 ~1993
639431631278863279 ~1992
639444775115558179 ~1993
639450231278900479 ~1992
639455991278911999 ~1992
639477711278955439 ~1992
639491391278982799 ~1992
639493311278986639 ~1992
639497031278994079 ~1992
639501115116008899 ~1993
639501231279002479 ~1992
639504591279009199 ~1992
639560031279120079 ~1992
639562191279124399 ~1992
2206
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25-06-08