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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
18974519379490398 ~1988
18974591379491838 ~1988
18974639379492798 ~1988
18974951379499038 ~1988
18975311379506238 ~1988
18975419379508398 ~1988
18977279379545598 ~1988
18977303379546078 ~1988
18977351379547038 ~1988
189774733036395699 ~1990
189775334175057279 ~1990
18977639379552798 ~1988
189778731138672399 ~1989
18977879379557598 ~1988
189780971138685839 ~1989
18978119379562398 ~1988
18978191379563838 ~1988
189784931138709599 ~1989
18978779379575598 ~1988
189789172657048399 ~1990
189795111518360899 ~1989
18980099379601998 ~1988
18980231379604638 ~1988
18980603379612078 ~1988
18981023379620478 ~1988
Exponent Prime Factor Digits Year
18981899379637998 ~1988
18983171379663438 ~1988
189837071898370719 ~1990
189838011518704099 ~1989
18983999379679998 ~1988
18984083379681678 ~1988
189841491518731939 ~1989
189844371139066239 ~1989
189844371518754979
18985163379703278 ~1988
18985259379705198 ~1988
18985619379712398 ~1988
18986171379723438 ~1988
189862071518896579 ~1989
18986651379733038 ~1988
18986699379733998 ~1988
18986963379739278 ~1988
18987131379742638 ~1988
189873471518987779 ~1989
18987491379749838 ~1988
189875591898755919 ~1990
18987791379755838 ~1988
18987803379756078 ~1988
18987959379759198 ~1988
189891611139349679 ~1989
Exponent Prime Factor Digits Year
18989219379784398 ~1988
18989291379785838 ~1988
189902271519218179 ~1989
189903536076912979 ~1991
18990539379810798 ~1988
18990599379811998 ~1988
189910671519285379 ~1989
189911771139470639 ~1989
18991919379838398 ~1988
18992591379851838 ~1988
189930891519447139 ~1989
18993563379871278 ~1988
18993599379871998 ~1988
18993911379878238 ~1988
189941811139650879 ~1989
18994379379887598 ~1988
189945971139675839 ~1989
189947713039163379 ~1990
18994823379896478 ~1988
189948411139690479 ~1989
189948834558771939 ~1990
189949791519598339 ~1989
189955331139731999 ~1989
189956234558949539 ~1990
18996011379920238 ~1988
Exponent Prime Factor Digits Year
18996311379926238 ~1988
189965391519723139 ~1989
18997019379940398 ~1988
18997031379940638 ~1988
189970313419465599
18997343379946878 ~1988
189973611519788899 ~1989
189974811139848879 ~1989
18998159379963198 ~1988
189989571519916579 ~1989
189990077599602819 ~1991
18999503379990078 ~1988
18999551379991038 ~1988
189996671899966719 ~1990
190001874560044899 ~1990
19000511380010238 ~1988
19000571380011438 ~1988
190005913420106399 ~1990
19001663380033278 ~1988
190020191900201919 ~1990
19002239380044798 ~1988
190024074560577699 ~1990
190032731140196399 ~1989
19003343380066878 ~1988
190034934560838339 ~1990
1378
GIMPS The Prime Pages FactorDb.com
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25-04-13