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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
4251629595228078
4251917595268398 ~1985
4251967425196718 ~1985
4252093255125598 ~1984
425221185044237 ~1983
425227185045437 ~1983
42524591020590179 ~1985
425251185050237 ~1983
4252519425251918 ~1985
425267985053597 ~1983
4252753935605678 ~1985
4252777255166638 ~1984
4252813255168798 ~1984
425282385056477 ~1983
4252877255172638 ~1984
425288385057677 ~1983
4252993255179598 ~1984
4253023425302318 ~1985
4253027765544878 ~1985
4253047425304718 ~1985
4253237255194238 ~1984
4253273255196398 ~1984
42533292977330319 ~1987
425335185067037 ~1983
425342385068477 ~1983
Exp. Prime Factor Digits Year
42534771276043119 ~1986
4253863425386318 ~1985
4254139425413918 ~1985
4254191340335298 ~1984
425431185086237 ~1983
4254361255261678 ~1984
4254583425458318 ~1985
425459985091997 ~1983
425462385092477 ~1983
4254797340383778 ~1984
4255087680813938 ~1985
4255093255305598 ~1984
4255301340424098 ~1984
4255387425538718 ~1985
4255501255330078 ~1984
42555192042649139 ~1986
42555771276673119 ~1986
4255963425596318 ~1985
425645985129197 ~1983
42566531276995919 ~1986
4256717255403038 ~1984
4256761681081778 ~1985
4256807340544578 ~1984
425696385139277 ~1983
4257067147294518310 ~1988
Exp. Prime Factor Digits Year
4257161255429678 ~1984
4257193255431598 ~1984
4257193936582478
4257217255433038 ~1984
4257359340588738 ~1984
425737185147437 ~1983
4258031340642498 ~1984
4258057681289138 ~1985
4258087425808718 ~1985
4258307340664578 ~1984
42583395535840719 ~1987
42587292299713679 ~1986
4258801681408178 ~1985
425888385177677 ~1983
425930385186077 ~1983
4259357340748578 ~1984
425989185197837 ~1983
4260041255602478 ~1984
42603171022476099 ~1985
426032385206477 ~1983
426055185211037 ~1983
4260703681712498 ~1985
4260719766929438 ~1985
4260917255655038 ~1984
4260917596528398
Exp. Prime Factor Digits Year
4260967766974078 ~1985
426107985221597 ~1983
4261177255670638 ~1984
4261193255671598 ~1984
426131985226397 ~1983
426133185226637 ~1983
4261363681818098 ~1985
4261553255693198 ~1984
4261651767097198 ~1985
4261727340938178 ~1984
426197985239597 ~1983
4262077681932338 ~1985
4262233255733998 ~1984
426239985247997 ~1983
4262549341003938 ~1984
4262549596756878
4262551682008178 ~1985
4262561255753678 ~1984
42626531023036739 ~1985
4262813596793838 ~1985
4262849341027938 ~1984
4262887426288718 ~1985
426335985267197 ~1983
4263403682144498 ~1985
426343185268637 ~1983
649
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26-08-02