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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
4249433594920638 ~1985
4249451339956098 ~1984
4249459424945918 ~1984
4249501254970078 ~1984
424952384990477 ~1983
4249537679925938 ~1985
424957184991437 ~1983
42497892039898739 ~1986
4249951424995118 ~1984
4249957679993138 ~1985
425006385001277 ~1983
4250177340014178 ~1984
4250219340017538 ~1984
4250287680045938 ~1985
42502991020071779 ~1985
425030385006077 ~1983
4250333595046638 ~1985
42503591020086179 ~1985
42503593060258499
425048385009677 ~1983
4250531340042498 ~1984
425059185011837 ~1983
425072385014477 ~1983
4250777595108798 ~1985
4250941255056478 ~1984
Exp. Prime Factor Digits Year
42509412975658719
4250993255059598 ~1984
4251031425103118 ~1984
4251349935296798 ~1985
4251461255087678 ~1984
4251601255096078 ~1984
4251629340130338 ~1984
4251629595228078
4251917595268398 ~1985
4251967425196718 ~1984
4252093255125598 ~1984
425221185044237 ~1983
425227185045437 ~1983
42524591020590179 ~1985
425251185050237 ~1983
4252519425251918 ~1984
425267985053597 ~1983
4252753935605678 ~1985
4252777255166638 ~1984
4252813255168798 ~1984
425282385056477 ~1983
4252877255172638 ~1984
425288385057677 ~1983
4252993255179598 ~1984
4253023425302318 ~1984
Exp. Prime Factor Digits Year
4253027765544878 ~1985
4253047425304718 ~1984
4253237255194238 ~1984
4253273255196398 ~1984
425335185067037 ~1983
425342385068477 ~1983
42534771276043119 ~1986
4253863425386318 ~1984
4254139425413918 ~1984
4254191340335298 ~1984
425431185086237 ~1983
4254361255261678 ~1984
4254583425458318 ~1984
425459985091997 ~1983
425462385092477 ~1983
4254797340383778 ~1984
4255087680813938 ~1985
4255093255305598 ~1984
4255301340424098 ~1984
4255387425538718 ~1984
4255501255330078 ~1984
42555192042649139 ~1986
42555771276673119 ~1986
4255963425596318 ~1984
425645985129197 ~1983
Exp. Prime Factor Digits Year
42566531276995919 ~1986
4256717255403038 ~1984
4256761681081778 ~1985
4256807340544578 ~1984
425696385139277 ~1983
4257067147294518310 ~1988
4257161255429678 ~1984
4257193255431598 ~1984
4257193936582478
4257217255433038 ~1984
4257359340588738 ~1984
425737185147437 ~1983
4258031340642498 ~1984
4258087425808718 ~1984
4258307340664578 ~1984
42587292299713679 ~1986
4258801681408178 ~1985
425888385177677 ~1983
425930385186077 ~1983
4259357340748578 ~1984
425989185197837 ~1983
4260041255602478 ~1984
42603171022476099 ~1985
426032385206477 ~1983
426055185211037 ~1983
621
GIMPS The Prime Pages FactorDb.com
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25-06-29