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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
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
3978817238729038 ~1984
3978917318313378 ~1984
3979117238747038 ~1984
3979147397914718 ~1984
397946379589277 ~1983
397951179590237 ~1983
3979511318360898
3979543636726898 ~1985
3979889557184478 ~1985
3979981238798878 ~1984
Exp. Prime Factor Digits Year
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
398263179652637 ~1983
3982697557577598 ~1985
398273979654797 ~1983
398276379655277 ~1983
398293179658637 ~1983
398312379662477 ~1983
398327979665597 ~1983
3983401876348238 ~1985
398347179669437 ~1983
3983873239032398 ~1984
3983873557742238
Exp. Prime Factor Digits Year
3983981318718498 ~1984
3983983398398318 ~1984
3984133637461298 ~1985
39841992310835439 ~1986
39842293107698639 ~1986
3984293239057598 ~1984
3984317318745378 ~1984
398447979689597 ~1983
398473179694637 ~1983
3984917239095038 ~1984
39849411275181139 ~1985
398497179699437 ~1983
398498379699677 ~1983
3985031318802498 ~1984
3985237637637938 ~1985
3985277557938798 ~1985
3985433239125998 ~1984
3985549876820798 ~1985
3985621239137278 ~1984
3985903398590318 ~1984
3985999717479838 ~1985
398605179721037 ~1983
3986231717521598 ~1985
3986263398626318 ~1984
3986273239176398 ~1984
Exp. Prime Factor Digits Year
3986513239190798 ~1984
3986531318922498 ~1984
398666379733277 ~1983
39866771185637739911 ~1990
398671179734237 ~1983
398677179735437 ~1983
3986953239217198 ~1984
3987167318973378 ~1984
3987199717695838 ~1985
39872271036679039 ~1985
39873532870894179 ~1986
398755179751037 ~1983
3987677319014178 ~1984
39877917018512179 ~1987
3987799398779918 ~1984
3987887319030978 ~1984
3987931398793118 ~1984
3987937239276238 ~1984
3987937638069938
3988021239281278 ~1984
398815179763037 ~1983
3988213638114098 ~1985
39882971196489119 ~1985
398833179766637 ~1983
398840379768077 ~1983
590
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25-04-13