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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
28580231571604638 ~1989
285803592858035919 ~1991
28580771571615438 ~1989
28581011571620238 ~1989
28581911571638238 ~1989
28582643571652878 ~1989
28582943571658878 ~1989
285830411714982479 ~1990
285839938575197919 ~1992
28584071571681438 ~1989
285842531715055199 ~1990
285844436860266339 ~1992
285845872286766979 ~1991
28584623571692478 ~1989
28585031571700638 ~1989
28585703571714078 ~1989
28585871571717438 ~1989
28586111571722238 ~1989
28586219571724398 ~1989
28586423571728478 ~1989
28586543571730878 ~1989
28586891571737838 ~1989
28587323571746478 ~1989
28587563571751278 ~1989
28588019571760398 ~1989
Exponent Prime Factor Digits Year
28588811571776238 ~1989
28589591571791838 ~1989
285901392859013919 ~1991
28590539571810798 ~1989
28590803503198132910 ~1994
28591571571831438 ~1989
28592411571848238 ~1989
285928032859280319 ~1991
28593179571863598 ~1989
28593431571868638 ~1989
28594103571882078 ~1989
28595291571905838 ~1989
28595639571912798 ~1989
28596299571925998 ~1989
285964612287716899 ~1991
28596731571934638 ~1989
28597031571940638 ~1989
28597511571950238 ~1989
28597703571954078 ~1989
28598123571962478 ~1989
28598159571963198 ~1989
28598183571963678 ~1989
28598519571970398 ~1989
285985971715915839 ~1990
28599299571985998 ~1989
Exponent Prime Factor Digits Year
28599479571989598 ~1989
285994992859949919 ~1991
28599743571994878 ~1989
286001574004021999 ~1991
28600163572003278 ~1989
28600763572015278 ~1989
28601399572027998 ~1989
28601603572032078 ~1989
28602251572045038 ~1989
286023771716142639 ~1990
28602383572047678 ~1989
286024011716144079 ~1990
28602851572057038 ~1989
28604171572083438 ~1989
28604423572088478 ~1989
286045492288363939 ~1991
286051331716307999 ~1990
28605911572118238 ~1989
28606811572136238 ~1989
28607339572146798 ~1989
28607471572149438 ~1989
286086072860860719 ~1991
28608731572174638 ~1989
286087912288703299 ~1991
28609151572183038 ~1989
Exponent Prime Factor Digits Year
286092534005295439 ~1991
28609439572188798 ~1989
28609463572189278 ~1989
28609523572190478 ~1989
28609583572191678 ~1989
28610591572211838 ~1989
286107496866579779 ~1992
286109571716657439 ~1990
286111374005559199 ~1991
28611659572233198 ~1989
28611683572233678 ~1989
28611923572238478 ~1989
28612091572241838 ~1989
286122172288977379 ~1991
28612439572248798 ~1989
28612511572250238 ~1989
28612583572251678 ~1989
28613003572260078 ~1989
28613831572276638 ~1989
28614191572283838 ~1989
28614263572285278 ~1989
28614611572292238 ~1989
28614983572299678 ~1989
28615019572300398 ~1989
286150874578413939 ~1991
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24-10-27