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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
20513039410260798 ~1988
20513231410264638 ~1988
20513771410275438 ~1988
20513819410276398 ~1988
20514251410285038 ~1988
205143711641149699 ~1990
205146171230877039 ~1989
20515619410312398 ~1988
20515679410313598 ~1988
20516123410322478 ~1988
205163516565232339 ~1991
20516843410336878 ~1988
20516939410338798 ~1988
205170371231022239 ~1989
205176771231060639 ~1989
20517719410354398 ~1988
205177992051779919 ~1990
20518259410365198 ~1988
20518391410367838 ~1988
20518523410370478 ~1988
20518669160045618310 ~1992
20519099410381998 ~1988
20519699410393998 ~1988
205197011231182079 ~1989
20519903410398078 ~1988
Exponent Prime Factor Digits Year
20519951410399038 ~1988
20519959119015762310 ~1992
20520191410403838 ~1988
205211571231269439 ~1989
20521283410425678 ~1988
205216731231300399 ~1989
205217474925219299 ~1991
20523143410462878 ~1988
20523203410464078 ~1988
20523623410472478 ~1988
205243331231459999 ~1989
205245312052453119 ~1990
20524739410494798 ~1988
20525231410504638 ~1988
205256232052562319 ~1990
20525831410516638 ~1988
20525903410518078 ~1988
20526059410521198 ~1988
205261611642092899 ~1990
20526911410538238 ~1988
205270371231622239 ~1989
205272494515994799 ~1991
20527319410546398 ~1988
20527379410547598 ~1988
20527499410549998 ~1988
Exponent Prime Factor Digits Year
20527739410554798 ~1988
205278891642231139 ~1990
205284673284554739 ~1990
205288191642305539 ~1990
20528999410579998 ~1988
20529779410595598 ~1988
20530151410603038 ~1988
205302011231812079 ~1989
20530871410617438 ~1988
20530931410618638 ~1988
20531183410623678 ~1988
205312971642503779 ~1990
20531519410630398 ~1988
20531783410635678 ~1988
20531999410639998 ~1988
20532731410654638 ~1988
20532839410656798 ~1988
205335111642680899 ~1990
20533979410679598 ~1988
205340991642727939 ~1990
205342071642736579 ~1990
20534471410689438 ~1988
20534603410692078 ~1988
205347131232082799 ~1989
20534807213561992910 ~1992
Exponent Prime Factor Digits Year
20534831410696638 ~1988
20534879410697598 ~1988
205349571642796579 ~1990
205353792595671905711 ~1995
20535479410709598 ~1988
20535503410710078 ~1988
20536751410735038 ~1988
20536823410736478 ~1988
205370511642964099 ~1990
205370879857801779 ~1991
20537243410744878 ~1988
20538239410764798 ~1988
20538359410767198 ~1988
205383613286137779 ~1990
20538923410778478 ~1988
20539283410785678 ~1988
205392973286287539 ~1990
20539751410795038 ~1988
20539919410798398 ~1988
20539979410799598 ~1988
205404171643233379 ~1990
205404593697282639 ~1990
20540543410810878 ~1988
20540699410813998 ~1988
20540783410815678 ~1988
1383
GIMPS The Prime Pages FactorDb.com
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24-10-27