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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.
Exponent Prime Factor Digits Year
20777651415553038 ~1988
20778011415560238 ~1988
20778203415564078 ~1988
207793971662351779 ~1990
207797233324755699 ~1990
20779751415595038 ~1988
20779799415595998 ~1988
20779919415598398 ~1988
20780219415604398 ~1988
20780411415608238 ~1988
207804792078047919 ~1990
20780999415619998 ~1988
20781251415625038 ~1988
20781263415625278 ~1988
207815179559497839 ~1991
207816371246898239 ~1989
20781851415637038 ~1988
20782031415640638 ~1988
207823272078232719 ~1990
20782379415647598 ~1988
207824171246945039 ~1989
20783291415665838 ~1988
20784143415682878 ~1988
207842771247056639 ~1989
20784443415688878 ~1988
Exponent Prime Factor Digits Year
20784671415693438 ~1988
207852771662822179 ~1990
20785313249423756110 ~1992
207868791662950339 ~1990
207870011247220079 ~1989
20787023415740478 ~1988
20787323415746478 ~1988
20787479415749598 ~1988
20787743415754878 ~1988
207879111663032899 ~1990
207879611247277679 ~1989
207880032078800319 ~1990
20788811415776238 ~1988
207890232078902319 ~1990
20789039415780798 ~1988
20789399415787998 ~1988
20789423415788478 ~1988
20790023415800478 ~1988
20790323415806478 ~1988
20790383415807678 ~1988
20790431415808638 ~1988
20790443415808878 ~1988
207904671663237379 ~1990
20790611415812238 ~1988
20790743415814878 ~1988
Exponent Prime Factor Digits Year
20791691415833838 ~1988
20792771415855438 ~1988
20793323415866478 ~1988
20793659415873198 ~1988
20794283415885678 ~1988
20794619415892398 ~1988
20794919415898398 ~1988
20795543415910878 ~1988
20795891415917838 ~1988
20795903415918078 ~1988
20796323415926478 ~1988
20796731415934638 ~1988
20797151415943038 ~1988
20797223415944478 ~1988
20797499415949998 ~1988
207976034991424739 ~1991
20797739415954798 ~1988
20797943415958878 ~1988
20798231415964638 ~1988
207987974991711299 ~1991
20799323415986478 ~1988
20799503415990078 ~1988
20799563415991278 ~1988
20799743415994878 ~1988
20800151416003038 ~1988
Exponent Prime Factor Digits Year
208001771447692319311 ~1994
208001814592679964911 ~1996
20800319416006398 ~1988
208003571248021439 ~1989
20800379416007598 ~1988
20800523416010478 ~1988
208011011248066079 ~1989
20801243416024878 ~1988
20801699416033998 ~1988
20801783416035678 ~1988
20802907120656860710 ~1992
20802923416058478 ~1988
208030671664245379 ~1990
20803091416061838 ~1988
20803091104015455110
208032171664257379 ~1990
20803259416065198 ~1988
20803703416074078 ~1988
208037773328604339 ~1990
208043871664350979 ~1990
20804783416095678 ~1988
208048731248292399 ~1989
208049294993182979 ~1991
208049331248295999 ~1989
20805539416110798 ~1988
1455
GIMPS The Prime Pages FactorDb.com
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25-06-08