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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
4196581251794878 ~1984
4196747335739778 ~1984
4196939335755138 ~1984
419699983939997 ~1983
4197133251827998 ~1984
4197337251840238 ~1984
41973671007368099 ~1985
419744383948877 ~1983
4197541251852478 ~1984
4197577671612338 ~1985
41976671007440099 ~1985
419792383958477 ~1983
4198111419811118 ~1984
419831983966397 ~1983
4198433587780638 ~1985
419851183970237 ~1983
4198549923680798 ~1985
41985493274868239
4198927671828338 ~1985
4198937335914978 ~1984
4198963671834098 ~1985
4199177251950638 ~1984
4199177587884798
4199231335938498 ~1984
419948383989677 ~1983
Exp. Prime Factor Digits Year
4199557251973438 ~1984
41995674115575679 ~1987
419971183994237 ~1983
4199803671968498 ~1985
41998911763954239 ~1986
419996383999277 ~1983
420002384000477 ~1983
4200167756030078 ~1985
4200227336018178 ~1984
4200257588035998 ~1985
4200487420048718 ~1984
42007331008175939 ~1985
420107984021597 ~1983
420119984023997 ~1983
420127184025437 ~1983
420134384026877 ~1983
420158384031677 ~1983
4201727336138178 ~1984
42017892689144979 ~1986
420181184036237 ~1983
4201889588264478 ~1985
420206384041277 ~1983
4202113252126798 ~1984
4202161672345778 ~1985
420217184043437 ~1983
Exp. Prime Factor Digits Year
420233984046797 ~1983
4202467141202891310 ~1988
4202567336205378 ~1984
4202827420282718 ~1984
420290384058077 ~1983
4203217252193038 ~1984
420323984064797 ~1983
420326384065277 ~1983
4203509336280738 ~1984
4203517252211038 ~1984
420359984071997 ~1983
4203887756699678 ~1985
4204069924895198 ~1985
420422384084477 ~1983
420452384090477 ~1983
4204601252276078 ~1984
42046094709162099 ~1987
42047413279697999 ~1987
420485984097197 ~1983
420503984100797 ~1983
420521984104397 ~1983
4205233672837298 ~1985
420530384106077 ~1983
42053211598021999 ~1986
4205347672855538 ~1985
Exp. Prime Factor Digits Year
4205473252328398 ~1984
4205581252334878 ~1984
42057132271085039 ~1986
420587984117597 ~1983
4205951336476098 ~1984
42059511766499439
4205977252358638 ~1984
42060531261815919 ~1986
4206179336494338 ~1984
4206281336502498 ~1984
4206703673072498 ~1985
4206899757241838 ~1985
4207139757285038 ~1985
42072431009738339 ~1985
42073391009761379 ~1985
4207663673226098 ~1985
420769184153837 ~1983
420779984155997 ~1983
420788384157677 ~1983
4207901336632098 ~1984
42080812019878899 ~1986
4208221252493278 ~1984
4208341252500478 ~1984
4208357252501438 ~1984
4208387336670978 ~1984
629
GIMPS The Prime Pages FactorDb.com
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25-12-14