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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
264846172118769379 ~1990
26484779529695598 ~1989
26484791529695838 ~1989
26485499529709998 ~1989
264859934237758899 ~1991
26486879529737598 ~1989
264870772118966179 ~1990
26487203529744078 ~1989
26487239529744798 ~1989
26487431529748638 ~1989
26487563529751278 ~1989
26487647132438235110 ~1992
26487971529759438 ~1989
26488211529764238 ~1989
264889912119119299 ~1990
26489063529781278 ~1989
264891371589348239 ~1990
26489579529791598 ~1989
26490083529801678 ~1989
264914274768456879 ~1991
26491631529832638 ~1989
26491739529834798 ~1989
26491859529837198 ~1989
26491931529838638 ~1989
264920776358098499 ~1992
Exponent Prime Factor Digits Year
26492663529853278 ~1989
26492759529855198 ~1989
26493023529860478 ~1989
26493059529861198 ~1989
264934571589607439 ~1990
26493563529871278 ~1989
264936531589619199 ~1990
26494043529880878 ~1989
26494271529885438 ~1989
26494691529893838 ~1989
26494931529898638 ~1989
26495723529914478 ~1989
26496479529929598 ~1989
264969131589814799 ~1990
26497463529949278 ~1989
264978531589871199 ~1990
26498099529961998 ~1989
264996312649963119 ~1991
264998531589991199 ~1990
26499983529999678 ~1989
26500091530001838 ~1989
265004511102418761711 ~1995
26500871530017438 ~1989
265010531590063199 ~1990
26501159530023198 ~1989
Exponent Prime Factor Digits Year
26501939530038798 ~1989
26502743530054878 ~1989
26503283530065678 ~1989
26503583111315048710 ~1992
26503619530072398 ~1989
26503871530077438 ~1989
26503979530079598 ~1989
265040338481290579 ~1992
26504279530085598 ~1989
265051131590306799 ~1990
26505239530104798 ~1989
26505359530107198 ~1989
26505599530111998 ~1989
26506211530124238 ~1989
265062371590374239 ~1990
26506583530131678 ~1989
26506703530134078 ~1989
26507291530145838 ~1989
26507963530159278 ~1989
26508323530166478 ~1989
26508659530173198 ~1989
26508731530174638 ~1989
26508959530179198 ~1989
26509391530187838 ~1989
265094713159928943311 ~1996
Exponent Prime Factor Digits Year
26509583530191678 ~1989
265096438483085779 ~1992
26509751530195038 ~1989
265103331590619999 ~1990
26511311530226238 ~1989
26511503530230078 ~1989
265120211590721279 ~1990
26512043530240878 ~1989
26512319530246398 ~1989
26512679530253598 ~1989
26512823530256478 ~1989
26513579530271598 ~1989
26514539530290798 ~1989
26514863530297278 ~1989
26515031530300638 ~1989
26515103530302078 ~1989
265151232651512319 ~1991
265152173712130399 ~1991
265152776363666499 ~1992
26516459530329198 ~1989
26516603530332078 ~1989
265169114242705779 ~1991
26517311530346238 ~1989
26517779530355598 ~1989
26517791530355838 ~1989
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25-04-13