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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
16818779336375598 ~1987
168187931009127599 ~1989
168189178073080179 ~1991
168192132691074099 ~1990
16819619336392398 ~1987
16819823336396478 ~1987
16819931336398638 ~1987
168199674036792099 ~1990
168199818073590899 ~1991
16820099336401998 ~1987
16820351336407038 ~1987
16820411336408238 ~1987
16820483336409678 ~1987
16820579336411598 ~1987
168206771009240639 ~1989
168211971345695779 ~1989
16821683336433678 ~1987
16821719336434398 ~1987
16821839336436798 ~1987
168219532355073439 ~1989
16822199336443998 ~1987
168229094037498179 ~1990
168232491345859939 ~1989
16823459336469198 ~1987
168235791345886339 ~1989
Exponent Prime Factor Digits Year
168237732691803699 ~1990
16823783336475678 ~1987
16823903336478078 ~1987
16824023336480478 ~1987
16824179336483598 ~1987
16824191336483838 ~1987
16824239336484798 ~1987
16824779336495598 ~1987
16825103336502078 ~1987
168253371009520239 ~1989
168253791346030339 ~1989
168255171009531039 ~1989
16825871336517438 ~1987
168260534038252739 ~1990
16826063336521278 ~1987
16826759336535198 ~1987
168271131009626799 ~1989
168273591346188739 ~1989
168275811346206499 ~1989
16827983336559678 ~1987
168282611009695679 ~1989
16828403336568078 ~1987
16828991336579838 ~1987
168293771009762639 ~1989
16829471336589438 ~1987
Exponent Prime Factor Digits Year
16829531336590638 ~1987
16829843336596878 ~1987
16829999336599998 ~1987
16830419336608398 ~1987
168304331009825999 ~1989
16831151336623038 ~1987
16831583336631678 ~1987
168316015386112339 ~1990
16832171336643438 ~1987
168321971009931839 ~1989
16832219336644398 ~1987
168326571009959439 ~1989
16832663336653278 ~1987
168327411009964479 ~1989
16833023336660478 ~1987
16833203336664078 ~1987
16833623336672478 ~1987
16834451336689038 ~1987
16834511336690238 ~1987
16834523336690478 ~1987
168345532356837439 ~1989
168345771010074639 ~1989
16834799336695998 ~1987
168348971010093839 ~1989
16835243336704878 ~1987
Exponent Prime Factor Digits Year
168352611010115679 ~1989
16835723336714478 ~1987
168357432693718899 ~1990
168358011010148079 ~1989
16835963336719278 ~1987
16836119336722398 ~1987
16836311336726238 ~1987
16836719336734398 ~1987
16837283336745678 ~1987
16837343336746878 ~1987
16837631336752638 ~1987
168376731010260399 ~1989
16838221121235191310 ~1991
168384471347075779 ~1989
168391571010349439 ~1989
168395211010371279 ~1989
168397931010387599 ~1989
168407571347260579 ~1989
168410571010463439 ~1989
16841399336827998 ~1987
168418731010512399 ~1989
16842131336842638 ~1987
16842323336846478 ~1987
16842851336857038 ~1987
16843019336860398 ~1987
1321
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25-06-29