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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
401713180342637 ~1983
4017313642770098 ~1985
40175471365965999 ~1986
4017599321407938 ~1984
401773180354637 ~1983
401780380356077 ~1983
4017931642868978 ~1985
40180813134103199 ~1986
4018087401808718 ~1984
4018087964340898
4018207642913138 ~1985
4018627401862718 ~1984
4018649562610878 ~1985
4018739321499138 ~1984
4018853241131198 ~1984
4018921643027378 ~1985
4018981643036978 ~1985
4019069562669678 ~1985
4019101643056178 ~1985
4019153241149198 ~1984
401915980383197 ~1983
4019173643067698 ~1985
4019359964646178 ~1985
4019461241167678 ~1984
4019579321566338 ~1984
Exp. Prime Factor Digits Year
401959180391837 ~1983
402011980402397 ~1983
4020227321618178 ~1984
4020277241216638 ~1984
4020287321622978 ~1984
402032380406477 ~1983
402043180408637 ~1983
4020461321636898 ~1984
402056380411277 ~1983
4020713241242798 ~1984
4020977241258638 ~1984
402107980421597 ~1983
402109180421837 ~1983
402115180423037 ~1983
4021153241269198 ~1984
40211776031765519 ~1987
4021261241275678 ~1984
4021397241283838 ~1984
4021397321711778
40214172573706899 ~1986
40215131206453919 ~1985
4021561241293678 ~1984
40216074182471299 ~1987
4021751723915198 ~1985
4021777241306638 ~1984
Exp. Prime Factor Digits Year
4021973241318398 ~1984
40220271930572979 ~1986
4022041241322478 ~1984
4022189321775138 ~1984
4022197643551538 ~1985
40222031608881219 ~1986
402230380446077 ~1983
402233980446797 ~1983
4022477241348638 ~1984
4022477563146798
402266380453277 ~1983
402278380455677 ~1983
402283180456637 ~1983
402289180457837 ~1983
4023401321872098 ~1984
4023599965663778 ~1985
40236191368030479 ~1986
402367180473437 ~1983
4023671321893698
4023731321898498 ~1984
40239731207191919 ~1985
4024037241442238 ~1984
4024039402403918 ~1984
4024289563400478 ~1985
4024369965848578 ~1985
Exp. Prime Factor Digits Year
40244118129310239 ~1987
402451180490237 ~1983
402473980494797 ~1983
402505180501037 ~1983
40252794186290179 ~1987
4025429563560078 ~1985
40257792898560899 ~1986
402578380515677 ~1983
4025797241547838 ~1984
4025941241556478 ~1984
4026017563642398 ~1985
402608380521677 ~1983
402613180522637 ~1983
4026137241568238 ~1984
4026313241578798 ~1984
4026667644266738 ~1985
402671980534397 ~1983
4026823402682318 ~1984
4027097241625838 ~1984
4027213644354098 ~1985
4027217241633038 ~1984
4027237241634238 ~1984
4027279966546978 ~1985
4027381108739287110 ~1988
4027393241643598 ~1984
617
GIMPS The Prime Pages FactorDb.com
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26-03-08