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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
121154324230877 ~1979
1211653266563678 ~1981
12116692908005619 ~1984
1211737484694818 ~1982
1211897363569118 ~1981
1211923193907698 ~1981
1211933654443838 ~1982
121199924239997 ~1979
121199996959937
12120173878454419 ~1984
1212121266666638 ~1981
1212149654560478 ~1982
1212187121218718 ~1980
12122412012320079 ~1983
121244324248877 ~1979
1212443800212398
121252197001697 ~1980
121267772760637 ~1980
1212697776126098 ~1982
121285197028097 ~1980
121291772775037 ~1980
121304997043937 ~1980
121314172788477 ~1980
1213327121332718 ~1980
121351797081377 ~1980
Exp. Prime Factor Digits Year
1213529582493938 ~1982
121363124272637 ~1979
121364324272877 ~1979
1213759509778798 ~1982
121376324275277 ~1979
121393124278637 ~1979
1213943315625198 ~1981
1214023121402318 ~1980
121403924280797 ~1979
12140392719447379
121407772844637 ~1980
12141176289126079 ~1984
1214407121440718 ~1980
121445924289197 ~1979
1214483971586418 ~1982
12145191481713199 ~1983
1214567218622078 ~1981
121463924292797 ~1979
1214641194342578 ~1981
1214657461569678 ~1982
1214657680207938
1214671121467118 ~1980
1214729971783218 ~1982
121473772884237 ~1980
1214737485894818
Exp. Prime Factor Digits Year
1214767194362738 ~1981
1214827121482718 ~1980
1214867680325538 ~1982
1214891583147698 ~1982
1215029170104078 ~1981
1215103194416498 ~1981
1215311388899538 ~1981
1215329170146078 ~1981
12153971142473199 ~1983
1215433777877138 ~1982
1215629389001298 ~1981
121571924314397 ~1979
121571997257537
121609197287297 ~1980
1216213291891138 ~1981
1216337583841778 ~1982
121641772985037 ~1980
1216433389258578 ~1981
1216529170314078 ~1981
121661997329537 ~1980
1216693657014238 ~1982
121671773003037 ~1980
121675124335037 ~1979
121675197340097
121679997343937 ~1980
Exp. Prime Factor Digits Year
121684197347297 ~1980
121691373014797 ~1980
1216937657145998 ~1982
1216939486775618 ~1982
12169873504922579 ~1984
121701773021037 ~1980
121705373023197 ~1980
121705797364577 ~1980
121706324341277 ~1979
1217131121713118 ~1980
1217299121729918 ~1980
121739373043597 ~1980
121739924347997 ~1979
121748324349677 ~1979
121765197412097 ~1980
12176511168944979
121766324353277 ~1979
121767773060637 ~1980
121775924355197 ~1979
121792173075277 ~1980
1217933292303938 ~1981
1218307706618078 ~1982
1218473389911378 ~1981
1218649268102798 ~1981
121877924375597 ~1979
287
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26-07-05