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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
1266847202695538 ~1981
1266883506753218 ~1982
12668931089527999 ~1983
1266949304067778 ~1981
1267121380136318 ~1982
126715125343037 ~1979
1267151912348738
1267291202766578 ~1981
1267307709691938 ~1982
12675011521001219 ~1983
12677871014229619 ~1983
126785925357197 ~1979
1267859532500798
1267939507175618 ~1982
126794325358877 ~1979
1268053278971678 ~1981
1268093380427918 ~1982
1268207837016638 ~1982
1268261913147938 ~1982
126827925365597 ~1979
1268291101463298 ~1980
126835776101437 ~1980
1268429989374638 ~1983
1268593304462338 ~1981
1268669101493538 ~1980
Exp. Prime Factor Digits Year
1268681710461378 ~1982
12687592156890319 ~1983
126879776127837 ~1980
1268867710565538 ~1982
12689212004895199 ~1983
1268929380678718 ~1982
1269017177662398 ~1981
1269061279193438 ~1981
1269077101526178 ~1980
1269173177684238 ~1981
126917925383597 ~1979
1269223126922318 ~1980
126923925384797 ~1979
1269253203080498 ~1981
126926325385277 ~1979
126931125386237 ~1979
1269337583895038 ~1982
1269343203094898 ~1981
1269427126942718 ~1980
126946176167677 ~1980
1269547304691298 ~1981
12695891421939699 ~1983
126960176176077 ~1980
1269643304714338 ~1981
126973125394637 ~1979
Exp. Prime Factor Digits Year
126973376183997 ~1980
12700672463929999 ~1984
1270147228626478 ~1981
1270193711308098 ~1982
1270231127023118 ~1980
1270279533517198 ~1982
1270319406502098 ~1982
1270327431911198 ~1982
127034325406877 ~1979
1270499228689838 ~1981
127051376230797 ~1980
1270531127053118 ~1980
127054176232477 ~1980
127056176233677 ~1980
12705611423028339
127057376234397 ~1980
1270649177890878 ~1981
1270649609911538
1270757482887678 ~1982
1270817177914398 ~1981
1270859101668738 ~1980
1270861279589438 ~1981
127105125421037 ~1979
1271089305061378 ~1981
127111125422237 ~1979
Exp. Prime Factor Digits Year
1271111406755538
1271213177969838 ~1981
1271293203406898 ~1981
1271299183067056110 ~1986
127135125427037 ~1979
1271359533970798 ~1982
1271393381417918 ~1982
1271561712074178 ~1982
1271731127173118 ~1980
12717492136538339 ~1983
127183376309997 ~1980
1271929305262978 ~1981
1271939101755138 ~1980
1271939407020498
1271953279829678 ~1981
127219125443837 ~1979
1272253508901218 ~1982
1272329381698718 ~1982
1272409305378178 ~1981
127244325448877 ~1979
1272461483535198 ~1982
127253925450797 ~1979
1272641610867698 ~1982
1272653305436738 ~1981
1272653407248978
290
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25-10-26