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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
644092271128818454310 ~2000
644125259128825051910 ~2000
644151251128830250310 ~2000
644153063128830612710 ~2000
644173823128834764710 ~2000
644177879128835575910 ~2000
644197283128839456710 ~2000
644234351128846870310 ~2000
644236031128847206310 ~2000
644238839128847767910 ~2000
644243531128848706310 ~2000
6443238471159782924711 ~2002
644334623128866924710 ~2000
644358359128871671910 ~2000
644368121386620872710 ~2001
644384891515507912910 ~2001
644421181386652708710 ~2001
644454383128890876710 ~2000
644485619128897123910 ~2000
644507183128901436710 ~2000
644512703128902540710 ~2000
644518403128903680710 ~2000
644529911128905982310 ~2000
644531963128906392710 ~2000
644548097386728858310 ~2001
Exponent Prime Factor Digits Year
644571971128914394310 ~2000
6445759731933727919111 ~2003
644580847644580847110 ~2002
644593583128918716710 ~2000
644606057386763634310 ~2001
6446434371547144248911 ~2002
644647043128929408710 ~2000
644647103128929420710 ~2000
644684351515747480910 ~2001
644685479128937095910 ~2000
644717207515773765710 ~2001
644719499128943899910 ~2000
644749499128949899910 ~2000
644765879128953175910 ~2000
644786699128957339910 ~2000
644793251128958650310 ~2000
6448213274126856492911 ~2003
644823911128964782310 ~2000
644861579128972315910 ~2000
644876951128975390310 ~2000
644883419128976683910 ~2000
644888663128977732710 ~2000
644899061386939436710 ~2001
644905091128981018310 ~2000
644918903128983780710 ~2000
Exponent Prime Factor Digits Year
6449219936578204328711 ~2004
644938507644938507110 ~2002
644943631644943631110 ~2002
644948119644948119110 ~2002
644956373386973823910 ~2001
644956391128991278310 ~2000
6449658611031945377711 ~2002
645006683129001336710 ~2000
645055049516044039310 ~2001
645070379129014075910 ~2000
645082283129016456710 ~2000
645110387516088309710 ~2001
645112541387067524710 ~2001
645144961387086976710 ~2001
645150137387090082310 ~2001
6451647591548395421711 ~2002
645207259645207259110 ~2002
645212591129042518310 ~2000
645233591129046718310 ~2000
645278519129055703910 ~2000
6452885714258904568711 ~2004
645329081387197448710 ~2001
645330443129066088710 ~2000
645338231129067646310 ~2000
645397217387238330310 ~2001
Exponent Prime Factor Digits Year
6454288994130744953711 ~2003
645444911129088982310 ~2000
645446519129089303910 ~2000
645470879129094175910 ~2000
645509519129101903910 ~2000
645558983129111796710 ~2000
645571919129114383910 ~2000
645596351129119270310 ~2000
645598223129119644710 ~2000
645627791129125558310 ~2000
645634331129126866310 ~2000
645642551129128510310 ~2000
645652211129130442310 ~2000
645653843129130768710 ~2000
645660361387396216710 ~2001
645684659129136931910 ~2000
645702647516562117710 ~2001
645719183129143836710 ~2000
6457335918394536683111 ~2004
6457435031033189604911 ~2002
6457607631549825831311 ~2002
6458278994133298553711 ~2003
645832199129166439910 ~2000
645834659129166931910 ~2000
645847151129169430310 ~2000
3303
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25-05-04