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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.
Exp. Prime Factor Digits Year
7408853444531198 ~1986
7408883148177678 ~1985
7409431740943118 ~1986
7410187189700787310 ~1990
7410191592815298 ~1986
7410281444616878 ~1986
7410553444633198 ~1986
7410569592845538 ~1986
7410743148214878 ~1985
7410857444651438 ~1986
74113992964559619 ~1988
7411667592933378 ~1986
7411687741168718 ~1986
7411823148236478 ~1985
7412159148243198 ~1985
7412183148243678 ~1985
7412341444740478 ~1986
7412351592988098 ~1986
7412593444755598 ~1986
7412653444759198 ~1986
7412681444760878 ~1986
7412843148256878 ~1985
7412857444771438 ~1986
7412891593031298 ~1986
7412921444775278 ~1986
Exp. Prime Factor Digits Year
7413053444783198 ~1986
74131871779164899 ~1987
7413359148267198 ~1985
7413443148268878 ~1985
7413641444818478 ~1986
7413811741381118 ~1986
7413871741387118 ~1986
74140372817334079 ~1988
74142171037990399 ~1987
7414523148290478 ~1985
74146131038045839 ~1987
7414937444896238 ~1986
7415183148303678 ~1985
7415257444915438 ~1986
7415423148308478 ~1985
7415803741580318 ~1986
74158391334851039 ~1987
7415861444951678 ~1986
7415977444958638 ~1986
7416191148323838 ~1985
7416377444982638 ~1986
7416443148328878 ~1985
7416869593349538 ~1986
7417021445021278 ~1986
7417169593373538 ~1986
Exp. Prime Factor Digits Year
7417357445041438 ~1986
7417439593395138 ~1986
74175076527406179 ~1989
7417643148352878 ~1985
7417757593420578 ~1986
74178293560557939 ~1988
7418459148369198 ~1985
74184972225549119 ~1988
7418501445110078 ~1986
7418737445124238 ~1986
7419143148382878 ~1985
7419337445160238 ~1986
7419913445194798 ~1986
7420043148400878 ~1985
7420243742024318 ~1986
7420339742033918 ~1986
7420397445223838 ~1986
74205195342773699 ~1988
7420643148412878 ~1985
7420943148418878 ~1985
74211432523188639 ~1988
7421237445274238 ~1986
7421363148427278 ~1985
7421437445286238 ~1986
7421681593734498 ~1986
Exp. Prime Factor Digits Year
7421759148435198 ~1985
7421831148436638 ~1985
7421849593747938 ~1986
74220013414120479 ~1988
7422011148440238 ~1985
74220171039082399 ~1987
74220171781284099
7422301445338078 ~1986
74223011187568179
7422497593799778 ~1986
7422743148454878 ~1985
7422839148456798 ~1985
74230791336154239 ~1987
7423153445389198 ~1986
74233271187732339 ~1987
74236071930137839 ~1987
7423631148472638 ~1985
7423919148478398 ~1985
74244011508638283311 ~1992
74245332227359919 ~1988
7424581445474878 ~1986
7424663148493278 ~1985
7424719742471918 ~1986
7424797445487838 ~1986
74248972821460879 ~1988
855
GIMPS The Prime Pages FactorDb.com
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25-04-13