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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
197488311579906499 ~1989
197489571579916579 ~1989
197492513554865199 ~1990
19749731394994638 ~1988
19750463395009278 ~1988
19751243395024878 ~1988
197514014345308239 ~1991
197530571185183439 ~1989
197531211185187279 ~1989
19753361821739817710 ~1994
19753403395068078 ~1988
19753931395078638 ~1988
19754219395084398 ~1988
19754303395086078 ~1988
19754431130379244710 ~1992
197544911975449119 ~1990
19754519395090398 ~1988
19754831395096638 ~1988
197548371185290239 ~1989
197552711975527119 ~1990
197553135926593919 ~1991
19756259395125198 ~1988
19756343395126878 ~1988
197565711580525699 ~1989
19756679395133598 ~1988
Exponent Prime Factor Digits Year
197568133161090099 ~1990
19756883395137678 ~1988
197571831173576670311 ~1994
19757291395145838 ~1988
197577834741867939 ~1991
197582091580656739 ~1989
19758239395164798 ~1988
197583411580667299 ~1989
19758419395168398 ~1988
197587011185522079 ~1989
19758899395177998 ~1988
19759079395181598 ~1988
19759391395187838 ~1988
19759871395197438 ~1988
19759931395198638 ~1988
19760099395201998 ~1988
19760291395205838 ~1988
197606231976062319 ~1990
19760651395213038 ~1988
197607894742589379 ~1991
19761503395230078 ~1988
19761671395233438 ~1988
197616713557100799
197622133161954099 ~1990
19762271395245438 ~1988
Exponent Prime Factor Digits Year
19763099395261998 ~1988
197631671976316719 ~1990
19763519395270398 ~1988
19763791130441020710 ~1992
19763951395279038 ~1988
19764119395282398 ~1988
19764131395282638 ~1988
19764539395290798 ~1988
197645931185875599 ~1989
19764611395292238 ~1988
197647331185883999 ~1989
19764851395297038 ~1988
19765919395318398 ~1988
19766171395323438 ~1988
19766339395326798 ~1988
19766759395335198 ~1988
197674211186045279 ~1989
197676911976769119 ~1990
19767911395358238 ~1988
197679772767516799 ~1990
19768043395360878 ~1988
197685131186110799 ~1989
197689193558405439 ~1990
197695271976952719 ~1990
19769819395396398 ~1988
Exponent Prime Factor Digits Year
19770071395401438 ~1988
197702091581616739 ~1989
19770403126530579310 ~1992
19770599395411998 ~1988
19770743395414878 ~1988
197710331186261999 ~1989
197717832087900284911 ~1995
19771919395438398 ~1988
197732771186396639 ~1989
19773311395466238 ~1988
19773731395474638 ~1988
197738331186429999 ~1989
19773913138417391110 ~1992
19773959395479198 ~1988
19774151395483038 ~1988
19774211395484238 ~1988
19774523395490478 ~1988
19774691395493838 ~1988
19775363395507278 ~1988
19775603395512078 ~1988
19775771395515438 ~1988
19775831395516638 ~1988
19776671395533438 ~1988
19777139395542798 ~1988
19777883395557678 ~1988
1455
GIMPS The Prime Pages FactorDb.com
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25-10-20