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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
397075179415037 ~1983
3970781238246878 ~1984
397085979417197 ~1983
3971393953134338 ~1985
397145979429197 ~1983
397148379429677 ~1983
3971599714887838 ~1985
3971621238297278 ~1984
3971731714911598 ~1985
3971833238309998 ~1984
3971861317748898 ~1984
397187979437597 ~1983
3971879317750338
39718992542015379 ~1986
3971911635505778 ~1985
3971911714943998
397196379439277 ~1983
397207179441437 ~1983
3972119714981438 ~1985
3972523635603698 ~1985
39725334131434339 ~1987
3972541238352478 ~1984
39726491191794719 ~1985
3972833238369998 ~1984
3972931397293118 ~1984
Exp. Prime Factor Digits Year
3972959317836738 ~1984
39731032860634179 ~1986
397328379465677 ~1983
397333179466637 ~1983
3973847715292478 ~1985
397391979478397 ~1983
3973997238439838 ~1984
3974027317922178 ~1984
39741431351208639 ~1986
397429179485837 ~1983
3974357238461438 ~1984
39746091192382719 ~1985
39746091907812339
3974681238480878 ~1984
3974717238483038 ~1984
397475979495197 ~1983
3974779953946978 ~1985
39747971589918819 ~1986
3975017318001378 ~1984
3975091397509118 ~1984
3975577238534638 ~1984
39755771192673119
3975661636105778 ~1985
3975749318059938 ~1984
3975779318062338 ~1984
Exp. Prime Factor Digits Year
3976169556663678 ~1985
3976783636285298 ~1985
3976927397692718 ~1984
397706379541277 ~1983
397715979543197 ~1983
3977293238637598 ~1984
3977293954550338
3977431715937598 ~1985
3977503397750318 ~1984
39776214773145219 ~1987
397763979552797 ~1983
3977639318211138
397766379553277 ~1983
3977807318224578 ~1984
397781979556397 ~1983
397790379558077 ~1983
39780311670773039 ~1986
39780711670789839 ~1986
39783294376161919 ~1987
3978497238709838 ~1984
39785232625825199 ~1986
3978553238713198 ~1984
3978643397864318 ~1984
397865979573197 ~1983
39787813501327299 ~1987
Exp. Prime Factor Digits Year
3978817238729038 ~1984
3978917318313378 ~1984
3979117238747038 ~1984
3979147397914718 ~1984
397946379589277 ~1983
397951179590237 ~1983
3979511318360898
3979511716311998
3979543636726898 ~1985
3979889557184478 ~1985
3979981238798878 ~1984
3980113238806798 ~1984
3980479716486238 ~1985
3980521238831278 ~1984
398089179617837 ~1983
3981301637008178 ~1985
39815032627791999 ~1986
398153979630797 ~1983
3981617238897038 ~1984
39816411274125139 ~1985
3981683955603938 ~1985
39816831274138579
39818831592753219 ~1986
398195979639197 ~1983
3982171637147378 ~1985
613
GIMPS The Prime Pages FactorDb.com
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26-03-15