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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
199451939890397 ~1980
1994621119677278 ~1981
1994647319143538 ~1982
1994687359043678 ~1983
1994717279260398 ~1982
1994777279268798 ~1982
199487939897597 ~1980
1994911319185778 ~1982
199502339900477 ~1980
1995221119713278 ~1981
1995221159617698
1995223478853538 ~1983
19953911436681539 ~1984
199543139908637 ~1980
1995547359198478 ~1983
199561139912237 ~1980
1995787359241678 ~1983
1995827359248878 ~1983
199597139919437 ~1980
1995977119758638 ~1981
1996207678710398 ~1983
199622339924477 ~1980
1996229279472078 ~1982
199628339925677 ~1980
199634339926877 ~1980
Exp. Prime Factor Digits Year
1996613638916178 ~1983
1996711199671118 ~1982
199676339935277 ~1980
1996817159745378 ~1982
1996859159748738 ~1982
1996937119816238 ~1981
1996949479267778 ~1983
199697939939597 ~1980
199700339940077 ~1980
199711139942237 ~1980
1997111639075538
1997111958613298
1997321159785698 ~1982
1997351639152338 ~1983
1997407679118398 ~1983
19975311438222339 ~1984
19975431797788719 ~1984
199759139951837 ~1980
1997707199770718 ~1982
199777139955437 ~1980
1997813119868798 ~1981
1997813639300178
199784339956877 ~1980
1997899199789918 ~1982
1997999159839938 ~1982
Exp. Prime Factor Digits Year
1998077119884638 ~1981
1998077279730798
1998133119887998 ~1981
1998319199831918 ~1982
1998329479598978 ~1983
199837139967437 ~1980
1998541119912478 ~1981
1998559679510078 ~1983
1998977159918178 ~1982
1999007159920578 ~1982
1999099479783778 ~1983
1999211159936898 ~1982
1999339359881038 ~1983
1999363319898098 ~1982
1999441799776418 ~1983
199949939989997 ~1980
1999537319925938 ~1982
199961939992397 ~1980
199969139993837 ~1980
1999721759893998 ~1983
199979939995997 ~1980
1999853279979438 ~1982
199985939997197 ~1980
1999867319978738 ~1982
1999979159998338 ~1982
Exp. Prime Factor Digits Year
20000031600002419 ~1984
200003940000797 ~1980
2000177280024798 ~1982
2000261640083538 ~1983
2000269480064578 ~1983
2000573640183378 ~1983
20006533801240719 ~1985
200069940013997 ~1980
2000813120048798 ~1981
2000813480195138
20008632120914799 ~1984
200090340018077 ~1980
2000927160074178 ~1982
2001037120062238 ~1981
20010671921024339 ~1984
2001199960575538 ~1984
2001281600384318 ~1983
200137140027437 ~1980
2001371360246798
2001407160112578 ~1982
200153940030797 ~1980
2001691200169118 ~1982
2001787200178718 ~1982
2001793120107598 ~1981
2001799800719618 ~1983
396
GIMPS The Prime Pages FactorDb.com
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26-05-03