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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
161203396721997 ~1981
1612181128974498 ~1981
161222332244477 ~1979
1612319197347845710 ~1986
161233396739997 ~1981
16124271064201839 ~1983
161269396761597 ~1981
161270332254077 ~1979
16127631064423599 ~1983
161282332256477 ~1979
1612997129039778 ~1981
1613033225824638 ~1982
161304196782477 ~1981
161305796783437 ~1981
1613057129044578
1613323161332318 ~1981
161348332269677 ~1979
1613669129093538 ~1981
16139811000668239 ~1983
161402332280477 ~1979
1614307290575278 ~1982
1614377484313118 ~1982
161444332288877 ~1979
1614461129156898 ~1981
161447932289597 ~1979
Exp. Prime Factor Digits Year
1614479387474978
161449132289837 ~1979
1614593387502338 ~1982
1614593516669778
1614631258340978 ~1982
161463796878237 ~1981
161465932293197 ~1979
1614659129172738
161491132298237 ~1979
1615001129200098 ~1981
16150731001345279 ~1983
1615231290741598 ~1982
1615253226135438 ~1982
1615307387673698 ~1982
161549932309997 ~1979
161550196930077 ~1981
161551132310237 ~1979
1615511129240898
161564332312877 ~1979
1615777484733118 ~1982
1615837387800898 ~1982
1615837743285038
1615949614060638 ~1983
161609932321997 ~1979
1616497484949118 ~1982
Exp. Prime Factor Digits Year
161662196997277 ~1981
1616627775980978 ~1983
161665132333037 ~1979
16168611164139939 ~1983
161689797013837 ~1981
161743397045997 ~1981
161744332348877 ~1979
161750332350077 ~1979
16175691261703839 ~1983
1617647129411778 ~1981
161774332354877 ~1979
1617779291200238 ~1982
1617883161788318 ~1981
161789397073597 ~1981
1617929129434338 ~1981
1618087258893938 ~1982
1618087550149598
161822332364477 ~1979
161827132365437 ~1979
1618271129461698
1618471679757838 ~1983
1618489388437378 ~1982
161850197110077 ~1981
1618531647412418 ~1983
1618601129488098 ~1981
Exp. Prime Factor Digits Year
16187392460483299 ~1984
161874197124477 ~1981
1619087129526978 ~1981
1619227291460878 ~1982
161925797155437 ~1981
161933932386797 ~1979
1619531291515598 ~1982
1619593388702338 ~1982
1619753226765438 ~1982
161986197191677 ~1981
1619899161989918 ~1981
1619987388796898 ~1982
162004197202477 ~1981
162007132401437 ~1979
1620331162033118 ~1981
1620379162037918 ~1981
16204496222524179 ~1985
1620467129637378 ~1981
162055132411037 ~1979
1620677129654178 ~1981
1620739388977378 ~1982
162074332414877 ~1979
162101932420397 ~1979
162107932421597 ~1979
1621127291802878 ~1982
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25-04-13