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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
27215423544308478 ~1989
272156331632937999 ~1990
272163611632981679 ~1990
27216503544330078 ~1989
272167674899018079 ~1991
272173872721738719 ~1991
27217511544350238 ~1989
27218519544370398 ~1989
272190411633142479 ~1990
272192594899466639 ~1991
27219743544394878 ~1989
27220019544400398 ~1989
27220163544403278 ~1989
27220463544409278 ~1989
27220643544412878 ~1989
27220703544414078 ~1989
272208412177667299 ~1991
27221039544420798 ~1989
27221123544422478 ~1989
27222551544451038 ~1989
27222911544458238 ~1989
272232674900188079 ~1991
27223403544468078 ~1989
27223811544476238 ~1989
27225179544503598 ~1989
Exponent Prime Factor Digits Year
27225323544506478 ~1989
27225439375711058310 ~1994
27225563544511278 ~1989
27225683544513678 ~1989
27226691544533838 ~1989
27227159544543198 ~1989
27227303544546078 ~1989
27227639544552798 ~1989
27228119544562398 ~1989
272289538713264979 ~1992
27229523544590478 ~1989
27229747457459749710 ~1994
272301171633807039 ~1990
27230603544612078 ~1989
27230783544615678 ~1989
27230891544617838 ~1989
27230939544618798 ~1989
272309771633858639 ~1990
27231311544626238 ~1989
272320272723202719 ~1991
27232739544654798 ~1989
27232811544656238 ~1989
27233183544663678 ~1989
27233543544670878 ~1989
27233879544677598 ~1989
Exponent Prime Factor Digits Year
272346533812851439 ~1991
27234743544694878 ~1989
27235511544710238 ~1989
27235739544714798 ~1989
27235823544716478 ~1989
27236399544727998 ~1989
27236509196102864910 ~1993
27236663544733278 ~1989
272369531634217199 ~1990
272370531634223199 ~1990
27237239544744798 ~1989
27237923544758478 ~1989
27238091544761838 ~1989
27238259544765198 ~1989
27238499544769998 ~1989
27238643544772878 ~1989
27239099544781998 ~1989
27239171544783438 ~1989
272400971634405839 ~1990
27240131544802638 ~1989
27240203544804078 ~1989
27242003544840078 ~1989
272422331634533999 ~1990
272429232724292319 ~1991
27244331544886638 ~1989
Exponent Prime Factor Digits Year
27244573386872936710 ~1994
27244583544891678 ~1989
27244883544897678 ~1989
27245219544904398 ~1989
27245831544916638 ~1989
27246431544928638 ~1989
27246599544931998 ~1989
27246671544933438 ~1989
27246683544933678 ~1989
27247043544940878 ~1989
27247823544956478 ~1989
272480093814721279 ~1991
27248051544961038 ~1989
27248363544967278 ~1989
272492811634956879 ~1990
27250511545010238 ~1989
27250523545010478 ~1989
27250739545014798 ~1989
27251363545027278 ~1989
27251579545031598 ~1989
272519771635118639 ~1990
27252119545042398 ~1989
272523411635140479 ~1990
27252359545047198 ~1989
272525092180200739 ~1991
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25-05-04