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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
1855927445422498 ~1983
185597937119597 ~1980
1855981296956978 ~1982
1855993111359598 ~1981
1856027148482178 ~1981
1856159334108638 ~1982
18562694306544099 ~1985
1856293297006898 ~1982
18562934900613539
185633937126797 ~1980
185641137128237 ~1980
1856411334153998
185663937132797 ~1980
1856773111406398 ~1981
185681937136397 ~1980
1856837111410238 ~1981
185690337138077 ~1980
1856917111415038 ~1981
1856941891331698 ~1983
185699937139997 ~1980
1857049445691778 ~1983
1857113111426798 ~1981
1857139185713918 ~1982
1857293260021038 ~1982
185737137147437 ~1980
Exp. Prime Factor Digits Year
1857377148590178 ~1981
1857521594406738 ~1983
185767137153437 ~1980
1857949408748798 ~1982
1858057111483438 ~1981
1858093297294898 ~1982
18586631970182799 ~1984
1858757148700578 ~1981
1858819334587438 ~1982
185882337176477 ~1980
1858873288497089710 ~1987
1858889446133378 ~1983
1859087483362638 ~1983
1859233111553998 ~1981
1859369260311678 ~1982
1859387148750978 ~1981
1859467185946718 ~1982
1859513111570798 ~1981
18595313719062019 ~1985
185960337192077 ~1980
18596531004212639 ~1983
1859677297548338 ~1982
1859771148781698 ~1981
185983137196637 ~1980
18598813533773919 ~1985
Exp. Prime Factor Digits Year
1859917743966818 ~1983
185999937199997 ~1980
1859999334799838
1860059148804738 ~1981
186017937203597 ~1980
1860251148820098 ~1981
1860301111618078 ~1981
1860431334877598 ~1982
1860479148838338 ~1981
18606291451290639 ~1984
18607092083994099 ~1984
1860721111643278 ~1981
186073137214637 ~1980
1860799186079918 ~1982
18608931786457299 ~1984
186092337218477 ~1980
186101937220397 ~1980
1861033297765298 ~1982
186110337222077 ~1980
1861253260575438 ~1982
18613514318334339 ~1985
186151137230237 ~1980
1861621297859378 ~1982
1861697893614578 ~1983
1861709260639278 ~1982
Exp. Prime Factor Digits Year
1861747335114478 ~1982
186185937237197 ~1980
1861889148951138 ~1981
1861889446853378
18618971005424399 ~1983
1861921409622638 ~1982
18620172346141439 ~1984
1862033111721998 ~1981
186211137242237 ~1980
1862111484148878
186221937244397 ~1980
1862219335199438
186227937245597 ~1980
1862297111737838 ~1981
186241137248237 ~1980
1862519149001538 ~1981
1862687335283678 ~1982
1862687447044898
18626873613612799
186289137257837 ~1980
1862923186292318 ~1982
1863089707973838 ~1983
1863097298095538 ~1982
1863307894387378 ~1983
186337137267437 ~1980
365
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25-05-04