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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
28122791562455838 ~1989
281235195062233439 ~1991
28124399562487998 ~1989
28125479562509598 ~1989
281261512250092099 ~1991
28126643562532878 ~1989
28126691562533838 ~1989
281267931687607599 ~1990
28128203562564078 ~1989
281290072250320579 ~1991
281291411687748479 ~1990
28130099562601998 ~1989
281303211687819279 ~1990
28131179562623598 ~1989
281312832813128319 ~1991
28131683562633678 ~1989
28132589202554640910 ~1993
28132631562652638 ~1989
28132859562657198 ~1989
281338874501421939 ~1991
28133999562679998 ~1989
28134479562689598 ~1989
28136063562721278 ~1989
28136099562721998 ~1989
28136711562734238 ~1989
Exponent Prime Factor Digits Year
28137563562751278 ~1989
28138679562773598 ~1989
281391411688348479 ~1990
28139543562790878 ~1989
28140383562807678 ~1989
28141163562823278 ~1989
28141439562828798 ~1989
28143239562864798 ~1989
281432595065786639 ~1991
28144043562880878 ~1989
281441698443250719 ~1992
28144331562886638 ~1989
28144463562889278 ~1989
28144943562898878 ~1989
28145459562909198 ~1989
28145651562913038 ~1989
281456872251654979 ~1991
281460772251686179 ~1991
28146539562930798 ~1989
281468571688811439 ~1990
28147439562948798 ~1989
281475192814751919 ~1991
28147523562950478 ~1989
281478312814783119 ~1991
28147859562957198 ~1989
Exponent Prime Factor Digits Year
281485512814855119 ~1991
28148819562976398 ~1989
28148903562978078 ~1989
28149479562989598 ~1989
28149623562992478 ~1989
28149683562993678 ~1989
28149743562994878 ~1989
28150103563002078 ~1989
281503571689021439 ~1990
281513931689083599 ~1990
281520436756490339 ~1992
28152251563045038 ~1989
281526378445791119 ~1992
281527011689162079 ~1990
28153439563068798 ~1989
281534571689207439 ~1990
28154831563096638 ~1989
28155503563110078 ~1989
281557971689347839 ~1990
281561693941863679 ~1991
28156559563131198 ~1989
28156643563132878 ~1989
281575811689454879 ~1990
28157663563153278 ~1989
28158491563169838 ~1989
Exponent Prime Factor Digits Year
28159031563180638 ~1989
28159139563182798 ~1989
28159151563183038 ~1989
281596032815960319 ~1991
28160519563210398 ~1989
28160999563219998 ~1989
28161599563231998 ~1989
28161863563237278 ~1989
28162019563240398 ~1989
28162391563247838 ~1989
28163171563263438 ~1989
28163939563278798 ~1989
281644571689867439 ~1990
28164791563295838 ~1989
281648411689890479 ~1990
28164863563297278 ~1989
281658772253270179 ~1991
28166471563329438 ~1989
28166783563335678 ~1989
28166819563336398 ~1989
28167059563341198 ~1989
28167179563343598 ~1989
28167239563344798 ~1989
28167263563345278 ~1989
28167383563347678 ~1989
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