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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
19819391396387838 ~1988
19819511396390238 ~1988
19819619396392398 ~1988
198196211189177279 ~1989
19819799396395998 ~1988
19819979396399598 ~1988
19820063396401278 ~1988
19820219396404398 ~1988
19820473126851027310 ~1992
19820711396414238 ~1988
198210131189260799 ~1989
19821863396437278 ~1988
19822559396451198 ~1988
19822571396451438 ~1988
19823159158585272110 ~1992
19823423396468478 ~1988
198237674757704099 ~1991
198241132775375839 ~1990
19824251396485038 ~1988
19824323396486478 ~1988
19824503396490078 ~1988
19824659396493198 ~1988
19824671396493438 ~1988
19824743396494878 ~1988
19824911396498238 ~1988
Exponent Prime Factor Digits Year
19825163396503278 ~1988
198251713172027379 ~1990
19825439396508798 ~1988
19826099396521998 ~1988
19826231396524638 ~1988
198262731189576399 ~1989
19826711396534238 ~1988
198270613172329779 ~1990
19827683396553678 ~1988
19827959396559198 ~1988
198280971189685839 ~1989
19828331396566638 ~1988
19828463396569278 ~1988
19828883396577678 ~1988
19829291396585838 ~1988
198294613172713779 ~1990
198299211189795279 ~1989
19830383396607678 ~1988
19830599396611998 ~1988
19830683396613678 ~1988
19831271396625438 ~1988
19831379396627598 ~1988
198316311586530499 ~1989
198317171189903039 ~1989
19832063396641278 ~1988
Exponent Prime Factor Digits Year
19832303396646078 ~1988
198323771189942639 ~1989
19833179396663598 ~1988
198336411190018479 ~1989
19834151396683038 ~1988
19834343396686878 ~1988
19834583396691678 ~1988
19835099396701998 ~1988
19835351396707038 ~1988
19835531396710638 ~1988
19835603396712078 ~1988
19835951396719038 ~1988
198364571459963235311 ~1994
198365993570587839 ~1990
19837379396747598 ~1988
19837739396754798 ~1988
19838051396761038 ~1988
19838579396771598 ~1988
198387739125835599 ~1991
19838939396778798 ~1988
19838963396779278 ~1988
19839299396785998 ~1988
198400211190401279 ~1989
198401331190407999 ~1989
19840259396805198 ~1988
Exponent Prime Factor Digits Year
19840319396806398 ~1988
19840571396811438 ~1988
19840631396812638 ~1988
19840703396814078 ~1988
19840763396815278 ~1988
198410775952323119 ~1991
19841579396831598 ~1988
19842143396842878 ~1988
19842241202390858310 ~1992
198433571190601439 ~1989
19843679396873598 ~1988
19844171396883438 ~1988
198444375953331119 ~1991
198448971587591779 ~1989
198453471587627779 ~1989
198453473572162479
19845863396917278 ~1988
198462011190772079 ~1989
19846223396924478 ~1988
19846283396925678 ~1988
198465234763165539 ~1991
198465373175445939 ~1990
19846979396939598 ~1988
198471291587770339 ~1989
19847963396959278 ~1988
1407
GIMPS The Prime Pages FactorDb.com
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25-04-13