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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
19655039393100798 ~1988
196550591965505919 ~1990
19655099393101998 ~1988
19655123393102478 ~1988
196551371179308239 ~1989
196551374717232899
196552971572423779 ~1989
19655411393108238 ~1988
19655483393109678 ~1988
19655771393115438 ~1988
196558971179353839 ~1989
196561734717481539 ~1991
19656239393124798 ~1988
19657871393157438 ~1988
19658161798121336710 ~1994
19658291393165838 ~1988
19658459393169198 ~1988
19658843393176878 ~1988
196600991966009919 ~1990
19660703393214078 ~1988
19660799393215998 ~1988
19661723393234478 ~1988
196617771179706639 ~1989
19662179393243598 ~1988
19662479393249598 ~1988
Exponent Prime Factor Digits Year
19662683393253678 ~1988
19663019393260398 ~1988
196631211573049699 ~1989
196633334325933279 ~1990
19663739393274798 ~1988
19663799393275998 ~1988
19663991393279838 ~1988
19664531393290638 ~1988
19664951393299038 ~1988
19665179393303598 ~1988
196658471966584719 ~1990
196658474719803299
19665911393318238 ~1988
19666079393321598 ~1988
19666319393326398 ~1988
196675033146800499 ~1990
19667891393357838 ~1988
196679931180079599 ~1989
19668023393360478 ~1988
19668179393363598 ~1988
19668263393365278 ~1988
196684571180107439 ~1989
19668503393370078 ~1988
196685471966854719 ~1990
196686611180119679 ~1989
Exponent Prime Factor Digits Year
196702911573623299 ~1989
19670471393409438 ~1988
19671791393435838 ~1988
196720911573767299 ~1989
19672319393446398 ~1988
19672379393447598 ~1988
19672403393448078 ~1988
196727875114924639 ~1991
19672811393456238 ~1988
19672883393457678 ~1988
19672979393459598 ~1988
19673039393460798 ~1988
19673099393461998 ~1988
196736513541257199 ~1990
19674659393493198 ~1988
19674841141658855310 ~1992
196751931180511599 ~1989
19675199224297268710 ~1992
19675391393507838 ~1988
19675559393511198 ~1988
196755593541600639
19676183393523678 ~1988
19676243393524878 ~1988
19676483393529678 ~1988
196765673541782079 ~1990
Exponent Prime Factor Digits Year
19676771393535438 ~1988
19677659393553198 ~1988
19677851393557038 ~1988
19678019393560398 ~1988
196781515116319279 ~1991
19678331393566638 ~1988
19678613216464743110 ~1992
19679339393586798 ~1988
19679519393590398 ~1988
19679963393599278 ~1988
19680359393607198 ~1988
19680431393608638 ~1988
19680911393618238 ~1988
19681943393638878 ~1988
19682339393646798 ~1988
19682363393647278 ~1988
19683071393661438 ~1988
196832531180995199 ~1989
19684139393682798 ~1988
19684391393687838 ~1988
19684739393694798 ~1988
19684919393698398 ~1988
19685819393716398 ~1988
19686031188985897710 ~1992
19686203393724078 ~1988
1407
GIMPS The Prime Pages FactorDb.com
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25-05-04