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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
20245499404909998 ~1988
20245559404911198 ~1988
202456376073691119 ~1991
20246123404922478 ~1988
20246483404929678 ~1988
202465911619727299 ~1990
20246783404935678 ~1988
202469211214815279 ~1989
20247239404944798 ~1988
20247803404956078 ~1988
202481811619854499 ~1990
202482731214896399 ~1989
20248451404969038 ~1988
20249123404982478 ~1988
20249291404985838 ~1988
20249423404988478 ~1988
202494433239910899 ~1990
20249819404996398 ~1988
20250239405004798 ~1988
202503433240054899 ~1990
20250491405009838 ~1988
20250539405010798 ~1988
20250563405011278 ~1988
20251079405021598 ~1988
202520171215121039 ~1989
Exponent Prime Factor Digits Year
20252279405045598 ~1988
202525393645457039 ~1990
20252783405055678 ~1988
20253011405060238 ~1988
20253119405062398 ~1988
20253419405068398 ~1988
20253539405070798 ~1988
202540491620323939 ~1990
202549371215296239 ~1989
20254991405099838 ~1988
20255003405100078 ~1988
202550771215304639 ~1989
20255723405114478 ~1988
202557711620461699 ~1990
202560292835844079 ~1990
20256959405139198 ~1988
202570732835990239 ~1990
20257091405141838 ~1988
202571171215427039 ~1989
20257271405145438 ~1988
20257943405158878 ~1988
20258291405165838 ~1988
20258663405173278 ~1988
20258831405176638 ~1988
20258939101294695110 ~1991
Exponent Prime Factor Digits Year
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
20266871405337438 ~1988
20267603405352078 ~1988
202676171216057039 ~1989
20268431405368638 ~1988
202687011216122079 ~1989
20268959405379198 ~1988
20269871405397438 ~1988
Exponent Prime Factor Digits Year
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
20275499405509998 ~1988
20275511405510238 ~1988
202755471622043779 ~1990
202768311622146499 ~1990
20277143405542878 ~1988
202771971216631839 ~1989
20277203405544078 ~1988
1437
GIMPS The Prime Pages FactorDb.com
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25-06-08