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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
4937551493755118 ~1985
49378131481343919 ~1986
493796398759277 ~1983
4937971493797118 ~1985
4938217790114738 ~1985
493823998764797 ~1983
493859998771997 ~1983
493862398772477 ~1983
493877998775597 ~1983
4939021296341278 ~1984
4939049395123938 ~1985
4939091395127298 ~1985
493952398790477 ~1983
493963198792637 ~1983
4939997296399838 ~1984
4940161296409678 ~1984
494023198804637 ~1983
4940531395242498 ~1985
4940587790493938 ~1985
494065198813037 ~1983
49406691185760579 ~1986
4940671494067118 ~1985
4940753346840860710 ~1990
494084398816877 ~1983
49412636028340879 ~1988
Exp. Prime Factor Digits Year
494138398827677 ~1983
4941551889479198 ~1986
4941593296495598 ~1984
4941593691823038
494173198834637 ~1983
4941787494178718 ~1985
4941857395348578 ~1985
49419434744265299 ~1987
494197198839437 ~1983
494198398839677 ~1983
49419833657067439
4942013296520798 ~1984
4942061296523678 ~1984
4942073691890238 ~1985
4942241395379298 ~1985
494227198845437 ~1983
49429011878302399 ~1986
4943011494301118 ~1985
494305198861037 ~1983
494306398861277 ~1983
494311198862237 ~1983
4943357296601438 ~1984
4943441296606478 ~1984
49436411977456419 ~1986
49436771186482499 ~1986
Exp. Prime Factor Digits Year
4943693296621598 ~1984
4943711395496898 ~1985
494383198876637 ~1983
494384398876877 ~1983
4943921296635278 ~1984
4943927889906878 ~1986
494411998882397 ~1983
4944281296656878 ~1984
49443434054361279 ~1987
494443198888637 ~1983
494453998890797 ~1983
4944557395564578 ~1985
4944691890044398 ~1986
4944713692259838 ~1985
4944733296683998 ~1984
4944833296689998 ~1984
494489998897997 ~1983
494509198901837 ~1983
4945261296715678 ~1984
49452671186864099 ~1986
4945279494527918 ~1985
49453074450776319 ~1987
494551198910237 ~1983
4945639494563918 ~1985
49461291187070979 ~1986
Exp. Prime Factor Digits Year
49461911978476419 ~1986
494635198927037 ~1983
494641198928237 ~1983
4946411395712898
4946581296794878 ~1984
4946681296800878 ~1984
494672398934477 ~1983
4946731890411598 ~1986
4946833296809998 ~1984
4946939395755138 ~1985
49470293957623219 ~1987
4947043494704318 ~1985
4947521296851278 ~1984
4947653296859198 ~1984
494777998955597 ~1983
4947791395823298 ~1985
4948093296885598 ~1984
4948337692767198 ~1985
49483374750403539
4948613692805838 ~1985
494863198972637 ~1983
4949293296957598 ~1984
49495211088894639 ~1986
4949597296975838 ~1984
4949621296977278 ~1984
699
GIMPS The Prime Pages FactorDb.com
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26-02-08