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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
1870577149646178 ~1981
187061937412397 ~1980
187085937417197 ~1980
1870919336765438 ~1982
1870927299348338 ~1982
1871057261947998 ~1982
1871081112264878 ~1981
18711717784071379 ~1986
187118337423677 ~1980
1871321149705698 ~1981
187145937429197 ~1980
1871549262016878 ~1982
187159137431837 ~1980
187165137433037 ~1980
1871777112306638 ~1981
18717771010759599
1871827299492338 ~1982
18718433294443699 ~1985
187195137439037 ~1980
187232337446477 ~1980
1872421112345278 ~1981
1872473419433952110 ~1987
1872667187266718 ~1982
18726672696640499
18727131161082079 ~1984
Exp. Prime Factor Digits Year
187274337454877 ~1980
1873013112380798 ~1981
1873099786701598 ~1983
1873211786748638 ~1983
1873217112393038 ~1981
1873321112399278 ~1981
1873409262277278 ~1982
1873433262280638 ~1982
1873441412157038 ~1983
1873507899283378 ~1983
18735832248299619 ~1984
1873637112418238 ~1981
1873849412246798 ~1983
18738892810833519 ~1985
18739792698529779 ~1985
187403937480797 ~1980
18740511236873679 ~1984
1874099599711698 ~1983
187430337486077 ~1980
1874491187449118 ~1982
1874599337427838 ~1982
1874669262453678 ~1982
187469937493997 ~1980
1874767187476718 ~1982
1874837112490238 ~1981
Exp. Prime Factor Digits Year
1874857112491438 ~1981
1874869449968578 ~1983
187490337498077 ~1980
1874921112495278 ~1981
1874941112496478 ~1981
187505937501197 ~1980
1875061112503678 ~1981
1875163187516318 ~1982
1875241112514478 ~1981
187531137506237 ~1980
1875373112522398 ~1981
1875521112531278 ~1981
187568337513677 ~1980
187595937519197 ~1980
1875977112558638 ~1981
187601937520397 ~1980
187616337523277 ~1980
1876211150096898 ~1981
187622337524477 ~1980
1876327187632718 ~1982
187633137526637 ~1980
1876333562899918 ~1983
187637937527597 ~1980
187640337528077 ~1980
1876417112585038 ~1981
Exp. Prime Factor Digits Year
187649937529997 ~1980
1876519450364578 ~1983
1876597112595838 ~1981
1876631150130498 ~1981
187664337532877 ~1980
1876657112599438 ~1981
18767331163574479 ~1984
1876807189182145710 ~1987
1876859450446178 ~1983
1877003488020798 ~1983
1877087150166978 ~1981
187715937543197 ~1980
1877209450530178 ~1983
1877221412988638 ~1983
187730337546077 ~1980
1877303600736978
1877347450563298 ~1983
1877521112651278 ~1981
18777171051521539 ~1984
187772337554477 ~1980
18777611314432719 ~1984
1877801112668078 ~1981
187789137557837 ~1980
1878043187804318 ~1982
1878049450731778 ~1983
367
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25-05-04