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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.
Exponent Prime Factor Digits Year
202571171215427039 ~1989
20257271405145438 ~1988
20257943405158878 ~1988
20258291405165838 ~1988
20258663405173278 ~1988
20258831405176638 ~1988
20258939101294695110 ~1991
202593111620744899 ~1990
20259419405188398 ~1988
20259731405194638 ~1988
20259983405199678 ~1988
202606371215638239 ~1989
20260979405219598 ~1988
202620192026201919 ~1990
202620897699593839 ~1991
20262239405244798 ~1988
202622391620979139
20262961255313308710 ~1992
202634232026342319 ~1990
202646092837045279 ~1990
20265551405311038 ~1988
20265941308042303310 ~1993
20266199405323998 ~1988
202661991621295939
20266391405327838 ~1988
Exponent Prime Factor Digits Year
20266871405337438 ~1988
20267603405352078 ~1988
202676171216057039 ~1989
20268431405368638 ~1988
202687011216122079 ~1989
20268959405379198 ~1988
20269871405397438 ~1988
20270303405406078 ~1988
202711872027118719 ~1990
20271323405426478 ~1988
202717931216307599 ~1989
202722292838112079 ~1990
202725291621802339 ~1990
20272859405457198 ~1988
20272979405459598 ~1988
202729971216379839 ~1989
202733211216399279 ~1989
20273699405473998 ~1988
202740193649323439 ~1990
20274179405483598 ~1988
20274203405484078 ~1988
20274791405495838 ~1988
202748331216489999 ~1989
20275163405503278 ~1988
202754331216525999 ~1989
Exponent Prime Factor Digits Year
20275499405509998 ~1988
20275511405510238 ~1988
202755471622043779 ~1990
202768311622146499 ~1990
20277143405542878 ~1988
202771971216631839 ~1989
20277203405544078 ~1988
20277599405551998 ~1988
202777931216667599 ~1989
20278031405560638 ~1988
20278151405563038 ~1988
20278403405568078 ~1988
20278763405575278 ~1988
20279723405594478 ~1988
202797318111892419 ~1991
20280059405601198 ~1988
20280119405602398 ~1988
20280287279867960710 ~1993
20280443405608878 ~1988
202807216084216319 ~1991
202807919734779699 ~1991
20280839405616798 ~1988
20281451405629038 ~1988
20281763405635278 ~1988
20281823405636478 ~1988
Exponent Prime Factor Digits Year
20281993141973951110 ~1992
202820571216923439 ~1989
20282231405644638 ~1988
20282303405646078 ~1988
20282903405658078 ~1988
20283671405673438 ~1988
20284223405684478 ~1988
20284331405686638 ~1988
202850171217101039 ~1989
20286263405725278 ~1988
20286419405728398 ~1988
20286443405728878 ~1988
20286503405730078 ~1988
20287199405743998 ~1988
202872072028720719 ~1990
20287583405751678 ~1988
20288003405760078 ~1988
20288459405769198 ~1988
20288699405773998 ~1988
20288759405775198 ~1988
20288843405776878 ~1988
202888992028889919 ~1990
20289011405780238 ~1988
20290331405806638 ~1988
20290943405818878 ~1988
1428
GIMPS The Prime Pages FactorDb.com
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25-05-04