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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
15197519303950398 ~1987
151975191215801539
151977171215817379 ~1989
15198143303962878 ~1987
151987611215900899 ~1989
15199319303986398 ~1987
15200051304001038 ~1987
15200459304009198 ~1987
15201071304021438 ~1987
15202163304043278 ~1987
15202283304045678 ~1987
15202331304046638 ~1987
15203339304066798 ~1987
15203399304067998 ~1987
15203753912225198 ~1988
152050791216406339 ~1989
15205451304109038 ~1987
152054571216436579 ~1989
152059072737063279 ~1989
15206123304122478 ~1987
15206201912372078 ~1988
15206281155104066310 ~1991
15206363304127278 ~1987
15206651304133038 ~1987
15206819304136398 ~1987
Exponent Prime Factor Digits Year
15207431304148638 ~1987
15207683304153678 ~1987
152080699048801055111 ~1996
15208139304162798 ~1987
15208573912514398 ~1988
15208811304176238 ~1987
15209113912546798 ~1988
15209297912557838 ~1988
15209531304190638 ~1987
15209591304191838 ~1987
15209651304193038 ~1987
15210059304201198 ~1987
15210179304203598 ~1987
15210361912621678 ~1988
15210593912635598 ~1988
15210743304214878 ~1987
15211019304220398 ~1987
15211139304222798 ~1987
15211463304229278 ~1987
15211873912712398 ~1988
15212237912734238 ~1988
152122872738211679 ~1989
15212557912753438 ~1988
152134311217074499 ~1989
15213479304269598 ~1987
Exponent Prime Factor Digits Year
15214019304280398 ~1987
15214499304289998 ~1987
15214631304292638 ~1987
15214931304298638 ~1987
15215099304301998 ~1987
15215279304305598 ~1987
15215287136937583110 ~1991
15215363304307278 ~1987
15215591304311838 ~1987
15215723304314478 ~1987
15215771304315438 ~1987
152159871217278979 ~1989
15216059304321198 ~1987
152166012434656179 ~1989
15217337913040238 ~1988
15217523304350478 ~1987
15217913913074798 ~1988
15217991304359838 ~1987
15218123304362478 ~1987
152183271217466179 ~1989
152184612434953779 ~1989
15218531304370638 ~1987
15218771304375438 ~1987
15218857913131438 ~1988
15219059304381198 ~1987
Exponent Prime Factor Digits Year
152199291217594339 ~1989
15219937118715508710 ~1991
152206972130897599 ~1989
15220883304417678 ~1987
15221039304420798 ~1987
15221711304434238 ~1987
15222197913331838 ~1988
152222574566677119 ~1990
15222433913345998 ~1988
152227191217817539 ~1989
152235471217883779 ~1989
152239732131356239 ~1989
15224003304480078 ~1987
15224017913441038 ~1988
15224123304482478 ~1987
15224351304487038 ~1987
15224771304495438 ~1987
152248636089945219 ~1990
152249177003461839 ~1990
15225239304504798 ~1987
152256534567695919 ~1990
15226019304520398 ~1987
15226091304521838 ~1987
15226283304525678 ~1987
152264692131705679 ~1989
1286
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25-10-20