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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.
Exp. Prime Factor Digits Year
121999197599297 ~1980
1220203488081218 ~1982
1220239219643038 ~1981
1220489292917378 ~1981
1220623292949538 ~1981
1220657463849678 ~1982
1220669170893678 ~1981
12207431001009279 ~1982
1220783610391518 ~1982
122081924416397 ~1979
122090324418077 ~1979
1220953488381218 ~1982
1220983122098318 ~1980
1221089586122738 ~1982
122113124422637 ~1979
122129924425997 ~1979
122138324427677 ~1979
1221551317603278 ~1981
12215931050569999 ~1983
1221631488652418 ~1982
1221667122166718 ~1980
12216671099500319
1221749366524718 ~1981
1221767610883518 ~1982
122179124435837 ~1979
Exp. Prime Factor Digits Year
1221907195505138 ~1981
1221937562091038 ~1982
1222063293295138 ~1981
1222097171093598 ~1981
1222159219988638 ~1981
1222187317768638 ~1981
1222253293340738 ~1981
1222267708914878 ~1982
12223072077921919 ~1983
122239373343597 ~1980
1222409171137278 ~1981
1222409293378178
122251373350797 ~1980
1222567220062078 ~1981
1222597293423298 ~1981
1222723122272318 ~1980
1222769171187678 ~1981
1222831122283118 ~1980
122288997831137 ~1980
122294324458877 ~1979
122296797837377 ~1980
1222993660416238 ~1982
1223059709374238 ~1982
1223093391389778 ~1981
1223177171244798 ~1981
Exp. Prime Factor Digits Year
122319773391837 ~1980
122323124464637 ~1979
1223279391449298 ~1981
122345924469197 ~1979
12234919004893779 ~1985
1223533269177278 ~1981
1223683293683938 ~1981
1223749367124718 ~1981
1223777660839598 ~1982
122387924477597 ~1979
122395373437197 ~1980
122413124482637 ~1979
1224239391756498 ~1981
1224439122443918 ~1980
122459924491997 ~1979
1224599293903778
1224701685832578 ~1982
1224709489883618 ~1982
1224763195962098 ~1981
1224859293966178 ~1981
1224913195986098 ~1981
12250094091530079 ~1984
1225019294004578 ~1981
122511773507037 ~1980
1225261857682718 ~1982
Exp. Prime Factor Digits Year
122533124506637 ~1979
1225331612665518
122557124511437 ~1979
1225579588277938 ~1982
122587198069697 ~1980
1225879294210978 ~1981
122588324517677 ~1979
122607773564637 ~1980
1226077196172338
1226101196176178 ~1981
122611124522237 ~1979
1226297367889118 ~1981
122633924526797 ~1979
122641773585037 ~1980
1226483318885598 ~1981
122654998123937 ~1980
122655773593437 ~1980
1226593367977918 ~1981
1226609392514898 ~1982
122665124533037 ~1979
122678324535677 ~1979
122678998143137 ~1980
1226789368036718
1226803122680318 ~1980
122685773611437 ~1980
287
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26-05-10