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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
21880583437611678 ~1988
218806973063297599 ~1990
21880763437615278 ~1988
218808471750467779 ~1990
21881039437620798 ~1988
21881063437621278 ~1988
21881557205686635910 ~1992
21882359437647198 ~1988
21882491437649838 ~1988
21882551437651038 ~1988
218825571312953439 ~1989
21882911437658238 ~1988
218829971312979839 ~1989
21883451437669038 ~1988
218836795252082979 ~1991
21883931437678638 ~1988
21884123437682478 ~1988
21884591437691838 ~1988
21884783437695678 ~1988
218849871750798979 ~1990
21885203437704078 ~1988
21885551437711038 ~1988
21886283437725678 ~1988
21886391437727838 ~1988
21886439437728798 ~1988
Exponent Prime Factor Digits Year
21886703437734078 ~1988
21886979437739598 ~1988
21887231437744638 ~1988
21887543437750878 ~1988
218878931313273599 ~1989
218879091751032739 ~1990
21888131437762638 ~1988
21888563437771278 ~1988
218888712188887119 ~1990
21889559437791198 ~1988
21889943437798878 ~1988
21890651437813038 ~1988
21890723437814478 ~1988
218907731313446399 ~1989
21891071437821438 ~1988
218913611313481679 ~1989
218914131313484799 ~1989
218914211313485279 ~1989
21892499437849998 ~1988
21892679437853598 ~1988
21892691437853838 ~1988
218931771751454179 ~1990
21893639437872798 ~1988
21893771437875438 ~1988
21894083437881678 ~1988
Exponent Prime Factor Digits Year
21894443437888878 ~1988
21894599437891998 ~1988
21894839437896798 ~1988
21894923437898478 ~1988
21895199437903998 ~1988
21895669118236612710 ~1992
21895883437917678 ~1988
21896411437928238 ~1988
218964771751718179 ~1990
21896639437932798 ~1988
21896879437937598 ~1988
218970171751761379 ~1990
21897371437947438 ~1988
218974334817435279 ~1991
21897611437952238 ~1988
21897803437956078 ~1988
21898379437967598 ~1988
218985771751886179 ~1990
218986731313920399 ~1989
218991591751932739 ~1990
218994312189943119 ~1990
21899543437990878 ~1988
21899831437996638 ~1988
21900299438005998 ~1988
21901259438025198 ~1988
Exponent Prime Factor Digits Year
21901403438028078 ~1988
219015193942273439 ~1991
21901571438031438 ~1988
219015713942282799
21901619438032398 ~1988
21902063438041278 ~1988
219022011314132079 ~1989
21902339438046798 ~1988
21902663438053278 ~1988
21902711438054238 ~1988
21903083438061678 ~1988
21903683438073678 ~1988
21904271438085438 ~1988
21904643438092878 ~1988
21905291438105838 ~1988
21905399438107998 ~1988
21905711438114238 ~1988
219061611752492899 ~1990
219064133066897839 ~1990
21907117276029674310 ~1993
219074933067049039 ~1990
21907871438157438 ~1988
21907943438158878 ~1988
219081792190817919 ~1990
21908219438164398 ~1988
1500
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25-07-08