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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
397618793180950339 ~1992
397619932385719599 ~1992
39762011795240238 ~1990
397623616361977779 ~1993
397634116362145779 ~1993
39763439795268798 ~1990
39763571795271438 ~1990
397653793976537919 ~1992
39766019795320398 ~1990
39768191795363838 ~1990
39768383795367678 ~1990
39768623795372478 ~1990
39769573119308719110 ~1993
39769703795394078 ~1990
397702612386215679 ~1992
39770639795412798 ~1990
39771779795435598 ~1990
39771983795439678 ~1990
397731479545555299 ~1993
39773603795472078 ~1990
39774439357969951110 ~1994
39774491795489838 ~1990
397759613182076899 ~1992
39776939795538798 ~1990
39777599795551998 ~1990
Exponent Prime Factor Digits Year
39777863795557278 ~1990
39778499795569998 ~1990
39778643795572878 ~1990
39778883795577678 ~1990
39780743795614878 ~1990
397808939547414339 ~1993
397809132386854799 ~1992
39781151795623038 ~1990
397827532386965199 ~1992
39783011795660238 ~1990
397835779548058499 ~1993
39784571795691438 ~1990
39786023795720478 ~1990
39786899795737998 ~1990
397892932387357599 ~1992
39789611795792238 ~1990
39790403795808078 ~1990
39790631795812638 ~1990
397912495570774879 ~1992
397912997162433839 ~1993
39791663795833278 ~1990
39792839795856798 ~1990
39793079795861598 ~1990
39793283795865678 ~1990
39794063795881278 ~1990
Exponent Prime Factor Digits Year
39794159795883198 ~1990
397943179550636099 ~1993
397945393979453919 ~1992
397945493183563939 ~1992
397945492825412979111
39794819795896398 ~1990
39794831795896638 ~1990
39795383795907678 ~1990
39795611795912238 ~1990
39796331795926638 ~1990
39796703795934078 ~1990
39797819795956398 ~1990
397981332387887999 ~1992
39798299795965998 ~1990
39799163795983278 ~1990
39799283795985678 ~1990
39799871795997438 ~1990
398000172388001039 ~1992
398013893184111139 ~1992
398014735572206239 ~1992
398032077164577279 ~1993
39803479350270615310 ~1994
39803663796073278 ~1990
39804503796090078 ~1990
398054812388328879 ~1992
Exponent Prime Factor Digits Year
39806699796133998 ~1990
398067372388404239 ~1992
39807083796141678 ~1990
39808019796160398 ~1990
39808091796161838 ~1990
39808523796170478 ~1990
398089135573247839 ~1992
39810119796202398 ~1990
39810143796202878 ~1990
398102579554461699 ~1993
39810383796207678 ~1990
39811979796239598 ~1990
39812159796243198 ~1990
39812303796246078 ~1990
398124413184995299 ~1992
39812891796257838 ~1990
398136173185089379 ~1992
39813659796273198 ~1990
39816131796322638 ~1990
39817751796355038 ~1990
39817931796358638 ~1990
39820499796409998 ~1990
398208839557011939 ~1993
398210993185687939 ~1992
39822479796449598 ~1990
2083
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26-03-15