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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
2075273290538238 ~1982
207548341509677 ~1980
207560341512077 ~1980
20757711660616819 ~1984
207583141516637 ~1980
2075867373656078 ~1983
2075917124555038 ~1981
207605941521197 ~1980
207607141521437 ~1980
2076089290652478 ~1982
207641941528397 ~1980
207661141532237 ~1980
2076653124599198 ~1981
20766531495190179
207673141534637 ~1980
2076797290751598 ~1982
207680341536077 ~1980
2076973456934078 ~1983
2077021124621278 ~1981
2077027207702718 ~1982
2077037124622238 ~1981
2077121623136318 ~1983
207715141543037 ~1980
207731941546397 ~1980
207734341546877 ~1980
Exp. Prime Factor Digits Year
2077391664765138 ~1983
207749941549997 ~1980
2077561124653678 ~1981
2077667373980078 ~1983
2077709623312718 ~1983
20777091620613039
2077781664889938 ~1983
2077807207780718 ~1982
20778411288261439 ~1984
207791941558397 ~1980
2078051166244098 ~1982
20781915320168979 ~1985
2078309166264738 ~1982
207839941567997 ~1980
207865141573037 ~1980
2078801124728078 ~1981
207883141576637 ~1980
2078851873117438 ~1984
2078933124735998 ~1981
207896341579277 ~1980
2079017291062398 ~1982
2079193623757918 ~1983
20792391039619519 ~1984
2079277124756638 ~1981
2079461124767678 ~1981
Exp. Prime Factor Digits Year
2079481332716978 ~1983
20795871372527439 ~1984
2079629499110978 ~1983
2079739374353038 ~1983
2079761124785678 ~1981
2079937280791495110 ~1987
2079943207994318 ~1982
2080081124804878 ~1981
20800811830471299
2080213124812798 ~1981
2080289166423138 ~1982
208043941608797 ~1980
2080543208054318 ~1982
2080577124834638 ~1981
2080667166453378 ~1982
2080679374522238 ~1983
208076341615277 ~1980
2080927374566878 ~1983
2080963208096318 ~1982
2080963874004478
208097941619597 ~1980
20811291623280639 ~1984
2081161624348318 ~1983
208117141623437 ~1980
208129141625837 ~1980
Exp. Prime Factor Digits Year
2081291166503298
2081311374635998 ~1983
208135141627037 ~1980
208148341629677 ~1980
2081491171931156710 ~1987
2081537499568898 ~1983
2081627166530178 ~1982
2081777124906638 ~1981
2081927541301038 ~1983
2082037124922238 ~1982
2082131374783598 ~1983
2082413124944798 ~1982
208253941650797 ~1980
2082539499809378
208265941653197 ~1980
2082727374890878 ~1983
2082749791444638 ~1983
208280341656077 ~1980
2082917124975038 ~1982
2083033499927938 ~1983
208307941661597 ~1980
20832191208267039 ~1984
2083229166658338 ~1982
2083387333341938 ~1983
2083511166680898 ~1982
400
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25-10-26