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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
9721919194438398 ~1986
9721979194439598 ~1986
97222992333351779 ~1988
9722477777798178 ~1987
9722507777800578 ~1987
9722771777821698 ~1987
97228371361197199 ~1988
9723071194461438 ~1986
9723179194463598 ~1986
97235232333645539 ~1988
97236471750256479 ~1988
9723653583419198 ~1987
9723697583421838 ~1987
9723773583426398 ~1987
9723797583427838 ~1987
9723851777908098 ~1987
9724061777924898 ~1987
9724259194485198 ~1986
97244272528351039 ~1988
9724633583477998 ~1987
9724661777972898 ~1987
9725231194504638 ~1986
9725399194507998 ~1986
9725407972540718 ~1987
9725459778036738 ~1987
Exp. Prime Factor Digits Year
9725531194510638 ~1986
9725873583552398 ~1987
9725879194517598 ~1986
9725951194519038 ~1986
9726097583565838 ~1987
9726337583580238 ~1987
9726371778109698 ~1987
9726413583584798 ~1987
9726551194531038 ~1986
9726683194533678 ~1986
9726971194539438 ~1986
9727163194543278 ~1986
9727199194543998 ~1986
97273131361823839 ~1988
9727391778191298 ~1987
9727463194549278 ~1986
9727541778203298 ~1987
9727693583661598 ~1987
9727871194557438 ~1986
9727999972799918 ~1987
9728051194561038 ~1986
97282693891307619 ~1989
9728291194565838 ~1986
9728429778274338 ~1987
9728503972850318 ~1987
Exp. Prime Factor Digits Year
9728533583711998 ~1987
9728639194572798 ~1986
9728843194576878 ~1986
9728897778311778 ~1987
9728903194578078 ~1986
9729101778328098 ~1987
9729143194582878 ~1986
9729149778331938 ~1987
9729173583750398 ~1987
9729479778358338 ~1987
9729743194594878 ~1986
9729983194599678 ~1986
9730163194603278 ~1986
9730247778419778 ~1987
9730499194609998 ~1986
97306572335357699 ~1988
9730691194613838 ~1986
9730709778456738 ~1987
9730753583845198 ~1987
9731101583866078 ~1987
97313172335516099 ~1988
9731321778505698 ~1987
9731699194633998 ~1986
9731699778535938
9732011194640238 ~1986
Exp. Prime Factor Digits Year
9732071194641438 ~1986
9732179194643598 ~1986
9732263194645278 ~1986
9732299778583938 ~1987
9732311194646238 ~1986
9732599778607938 ~1987
9732659194653198 ~1986
97326771362574799 ~1988
9732917778633378 ~1987
9732923194658478 ~1986
9733001778640098 ~1987
9733631194672638 ~1986
9733651973365118 ~1987
9733679194673598 ~1986
9734243194684878 ~1986
9734321584059278 ~1987
9734411778752898 ~1987
9734513584070798 ~1987
9734579194691598 ~1986
9734639194692798 ~1986
9735263194705278 ~1986
9735311194706238 ~1986
9735833584149998 ~1987
9736409778912738 ~1987
9736451194729038 ~1986
1055
GIMPS The Prime Pages FactorDb.com
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26-05-03