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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
24216427256694126310 ~1993
242164571452987439 ~1990
24217031484340638 ~1989
24217139484342798 ~1989
24217379484347598 ~1989
242173791937390339
24217559484351198 ~1989
24218651484373038 ~1989
24219131484382638 ~1989
242207833875325299 ~1991
24221339484426798 ~1989
24221831484436638 ~1989
24222491484449838 ~1989
24222959484459198 ~1989
24223343484466878 ~1989
24223583484471678 ~1989
24224111484482238 ~1989
24225419484508398 ~1989
242256711938053699 ~1990
242270811453624879 ~1990
24227531484550638 ~1989
242278211453669279 ~1990
24228719484574398 ~1989
242289771938318179 ~1990
24229571484591438 ~1989
Exponent Prime Factor Digits Year
24229979484599598 ~1989
24230039484600798 ~1989
24230243484604878 ~1989
242311311938490499 ~1990
24231323484626478 ~1989
24231563484631278 ~1989
24231611484632238 ~1989
24231671484633438 ~1989
242324691938597539 ~1990
242327571938620579 ~1990
24232919484658398 ~1989
242332671938661379 ~1990
24233771484675438 ~1989
24233843484676878 ~1989
24234599484691998 ~1989
24234779484695598 ~1989
24235199484703998 ~1989
24235511484710238 ~1989
24235559484711198 ~1989
24235643484712878 ~1989
24235667237509536710 ~1993
24235979484719598 ~1989
242362931454177599 ~1990
242364379694574819 ~1992
242374491938995939 ~1990
Exponent Prime Factor Digits Year
24237491484749838 ~1989
24237623484752478 ~1989
24238079484761598 ~1989
24238139484762798 ~1989
24238391484767838 ~1989
242387233878195699 ~1991
24238871484777438 ~1989
24239483484789678 ~1989
242395331454371999 ~1990
242398499211142639 ~1992
242398671939189379 ~1990
24240311484806238 ~1989
24240803484816078 ~1989
242410811454464879 ~1990
242412131454472799 ~1990
242412771454476639 ~1990
242415432424154319 ~1990
24241559484831198 ~1989
242421371454528239 ~1990
24242243484844878 ~1989
24242591484851838 ~1989
24243083484861678 ~1989
242431371454588239 ~1990
242433971454603839 ~1990
242437331454623999 ~1990
Exponent Prime Factor Digits Year
24244631484892638 ~1989
24244799484895998 ~1989
242449194364085439 ~1991
242460371454762239 ~1990
24246263484925278 ~1989
24246503484930078 ~1989
24246791484935838 ~1989
242470611454823679 ~1990
24247343484946878 ~1989
24247403484948078 ~1989
242474091939792739 ~1990
24248039484960798 ~1989
24248459484969198 ~1989
24249971484999438 ~1989
242500499215018639 ~1992
24250283485005678 ~1989
24250379485007598 ~1989
242504937275147919 ~1992
24250703485014078 ~1989
24251063485021278 ~1989
242516112425161119 ~1990
24251651485033038 ~1989
24251663485033278 ~1989
24251879485037598 ~1989
242521011455126079 ~1990
1557
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25-05-04