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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
16317839326356798 ~1987
163185075548292399 ~1990
16318559326371198 ~1987
163189572611033139 ~1990
16319483326389678 ~1987
16319819326396398 ~1987
16320121979207278 ~1988
16320803326416078 ~1987
16321223326424478 ~1987
16321451326429038 ~1987
163216671305733379 ~1989
163219572611513139 ~1990
16321961979317678 ~1988
16322231326444638 ~1987
16322483326449678 ~1987
16322699326453998 ~1987
16322759326455198 ~1987
16322783326455678 ~1987
16323011326460238 ~1987
163231616202801199 ~1990
16323551326471038 ~1987
16323677169766240910 ~1992
16324151326483038 ~1987
16324943326498878 ~1987
16324991326499838 ~1987
Exponent Prime Factor Digits Year
16325663326513278 ~1987
16326203326524078 ~1987
16326371326527438 ~1987
16326983326539678 ~1987
163271538816662639 ~1991
16328243326564878 ~1987
16328437979706238 ~1988
16328699326573998 ~1987
16328843326576878 ~1987
16329083326581678 ~1987
16329119326582398 ~1987
16329359326587198 ~1987
16329611326592238 ~1987
163296891306375139 ~1989
16329899326597998 ~1987
16331603326632078 ~1987
16331723326634478 ~1987
16331831326636638 ~1987
16331879326637598 ~1987
163318793919650979
16332119326642398 ~1987
163321491306571939 ~1989
16332661979959678 ~1988
16333799326675998 ~1987
163339511633395119 ~1989
Exponent Prime Factor Digits Year
16334377980062638 ~1988
16334561980073678 ~1988
16334881980092878 ~1988
16335239326704798 ~1987
16335443326708878 ~1987
16335551326711038 ~1987
16335821980149278 ~1988
16336273980176398 ~1988
16336513980190798 ~1988
163375071307000579 ~1989
16337903326758078 ~1987
16338599326771998 ~1987
163391572287481999 ~1989
16339391326787838 ~1987
16340003326800078 ~1987
16340339326806798 ~1987
163404071803980932911 ~1994
16340651326813038 ~1987
16340843326816878 ~1987
16341541980492478 ~1988
16342297980537838 ~1988
163424271307394179 ~1989
16342919326858398 ~1987
16343003326860078 ~1987
16343213980592798 ~1988
Exponent Prime Factor Digits Year
16343279326865598 ~1987
163436517844952499 ~1991
16343753980625198 ~1988
163438631634386319 ~1989
16344071326881438 ~1987
16344479326889598 ~1987
163445691307565539 ~1989
16344623326892478 ~1987
16344841980690478 ~1988
163449891307599139 ~1989
16345423251719514310 ~1992
16345883326917678 ~1987
16346243326924878 ~1987
163462733923105539 ~1990
16346723326934478 ~1987
16346873980812398 ~1988
163469591634695919 ~1989
16347179326943598 ~1987
16347911326958238 ~1987
16348259326965198 ~1987
16348481980908878 ~1988
16348859326977198 ~1987
16348877980932638 ~1988
16349351326987038 ~1987
16349363326987278 ~1987
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25-05-04