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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
6442057386523438 ~1985
6442223128844478 ~1984
6442283128845678 ~1984
6442361386541678 ~1985
6442427515394178 ~1986
6442573386554398 ~1985
6442763128855278 ~1984
64428014638816739 ~1988
6442811128856238 ~1984
6442937515434978 ~1986
6442979128859598 ~1984
64432931546390339 ~1987
6443399515471938 ~1986
6443483128869678 ~1984
6443537386612238 ~1985
6443537515482978
6443543128870878 ~1984
6443573902100238 ~1986
6443743644374318 ~1986
6443903128878078 ~1984
6443953386637198 ~1985
6444041515523298 ~1986
6444197386651838 ~1985
64442711159968799 ~1987
6444637386678238 ~1985
Exp. Prime Factor Digits Year
6444803128896078 ~1984
64448591546766179 ~1987
6444979181748407910 ~1989
6445079128901598 ~1984
6445223128904478 ~1984
6445391128907838 ~1984
6445459644545918 ~1986
6445559128911198 ~1984
6445739128914798 ~1984
6445811128916238 ~1984
6445823128916478 ~1984
6445919128918398 ~1984
64462031031392499 ~1986
6446243128924878 ~1984
6446267515701378 ~1986
6446347644634718 ~1986
6446351128927038 ~1984
6446353386781198 ~1985
6446633386797998 ~1985
6446711128934238 ~1984
6446939128938798 ~1984
6447179128943598 ~1984
6447277386836638 ~1985
6447283644728318 ~1986
6447317515785378 ~1986
Exp. Prime Factor Digits Year
6447557515804578 ~1986
64477671547464099 ~1987
64479231547501539 ~1987
6447929902710078 ~1986
6447989515839138 ~1986
6448133386887998 ~1985
64481571934447119 ~1987
6448223128964478 ~1984
64482411934472319 ~1987
6448451128969038 ~1984
6448529515882338 ~1986
6448553386913198 ~1985
6448567644856718 ~1986
6448811128976238 ~1984
6449021515921698 ~1986
64491175159293619 ~1988
6449351128987038 ~1984
6449753386985198 ~1985
6449903128998078 ~1984
64501091548026179 ~1987
6450217387013038 ~1985
6450299129005998 ~1984
6450611129012238 ~1984
6451099645109918 ~1986
6451163129023278 ~1984
Exp. Prime Factor Digits Year
6451217387073038 ~1985
6451271129025438 ~1984
6451331129026638 ~1984
6451331516106498
6451433387085998 ~1985
6451573387094398 ~1985
6451691129033838 ~1984
64517592580703619 ~1987
6451769516141538 ~1986
64519331032309299 ~1986
6451943129038878 ~1984
6452111129042238 ~1984
6452261516180898 ~1986
64522911161412399 ~1987
64523892580955619 ~1987
6452423129048478 ~1984
6452711129054238 ~1984
6452753387165198 ~1985
64528211419620639 ~1987
6452893387173598 ~1985
64528931548694339
6453137516250978 ~1986
6453263129065278 ~1984
64534632194177439 ~1987
6453493387209598 ~1985
808
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25-10-20