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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
389705977941197 ~1982
389720377944077 ~1982
3897359935366178 ~1985
389761177952237 ~1982
3897611311808898
389767177953437 ~1982
3897797311823778 ~1984
3897827311826178 ~1984
389801977960397 ~1982
3898073233884398 ~1984
3898123623699698 ~1985
3898177233890638 ~1984
389831977966397 ~1982
3898373233902398 ~1984
389837977967597 ~1982
3898513233910798 ~1984
3898513935643138
3898633233917998 ~1984
3898637311890978 ~1984
3898757233925438 ~1984
389887177977437 ~1982
389894377978877 ~1982
389899177979837 ~1982
3899057311924578 ~1984
3899153545881438 ~1985
Exp. Prime Factor Digits Year
389927977985597 ~1982
3899353233961198 ~1984
3899407389940718 ~1984
389977177995437 ~1982
38998093431831939 ~1986
3900167312013378 ~1984
3900223624035698 ~1985
3900227702040878 ~1985
3900367624058738 ~1985
39005811170174319 ~1985
390062378012477 ~1982
3900733624117298 ~1985
390083978016797 ~1982
3900937234056238 ~1984
3901201234072078 ~1984
390122378024477 ~1982
39012236319981279
3901333234079998 ~1984
3901369858301198 ~1985
390151178030237 ~1982
3901531624244978 ~1985
390157178031437 ~1982
3901571312125698
39016731248535379 ~1985
3901853234111198 ~1984
Exp. Prime Factor Digits Year
3901867390186718 ~1984
3902053858451678 ~1985
39021491873031539 ~1986
390221978044397 ~1982
3902237312178978 ~1984
390235178047037 ~1982
3902441234146478 ~1984
3902489312199138 ~1984
390281978056397 ~1982
3902827390282718 ~1984
39028272575865839
3903101742369810310 ~1990
3903131312250498 ~1984
390314378062877 ~1982
3903233234193998 ~1984
3903281234196878 ~1984
390329978065997 ~1982
39034791249113299 ~1985
390356378071277 ~1982
3903637234218238 ~1984
3904447390444718 ~1984
39045012733150719 ~1986
3904547702818478 ~1985
3904603390460318 ~1984
39047574685708419 ~1987
Exp. Prime Factor Digits Year
39047577809514019
390493178098637 ~1982
3904973234298398 ~1984
3905113234306798 ~1984
3905177234310638 ~1984
390535178107037 ~1982
390565178113037 ~1982
3905777312462178 ~1984
39059331249898579 ~1985
390632378126477 ~1982
3906361234381678 ~1984
39064071015665839 ~1985
3906547625047538 ~1985
3906653546931438 ~1985
3906691625070578 ~1985
3906797234407838 ~1984
3906827312546178 ~1984
390691178138237 ~1982
3907051625128178 ~1985
39070613985202239 ~1987
3907069937696578 ~1985
3907081234424878 ~1984
3907097234425838 ~1984
3907159937718178 ~1985
3907193234431598 ~1984
584
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25-05-04