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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
20556863411137278 ~1988
20556923411138478 ~1988
20556923102784615110
205572891644583139 ~1990
20557451411149038 ~1988
205574894933797379 ~1991
20557571411151438 ~1988
20557583411151678 ~1988
20558003411160078 ~1988
20558183411163678 ~1988
20558339411166798 ~1988
20559191411183838 ~1988
20559551411191038 ~1988
205595511644764099
205605371233632239 ~1989
20560583411211678 ~1988
20561903411238078 ~1988
20562323411246478 ~1988
20562623411252478 ~1988
20562719411254398 ~1988
205627971233767839 ~1989
20562803411256078 ~1988
20562863411257278 ~1988
20563811411276238 ~1988
20563979411279598 ~1988
Exponent Prime Factor Digits Year
20564123411282478 ~1988
20564171411283438 ~1988
205651075346927839 ~1991
205651336169539919 ~1991
20565371411307438 ~1988
20565383411307678 ~1988
20565731411314638 ~1988
20566079411321598 ~1988
205661234935869539 ~1991
20566391411327838 ~1988
20566631411332638 ~1988
205667393702013039 ~1990
20567231411344638 ~1988
205677131234062799 ~1989
20568683411373678 ~1988
20568731411374638 ~1988
20568959411379198 ~1988
20569403411388078 ~1988
205701771234210639 ~1989
20570351411407038 ~1988
20571443411428878 ~1988
20571503411430078 ~1988
20571779411435598 ~1988
20572151411443038 ~1988
20572199411443998 ~1988
Exponent Prime Factor Digits Year
20572379411447598 ~1988
20572451411449038 ~1988
20572523411450478 ~1988
20573159411463198 ~1988
20573291411465838 ~1988
20573303411466078 ~1988
20573411411468238 ~1988
20573471411469438 ~1988
205735377817944079 ~1991
205736874937684899 ~1991
20573711411474238 ~1988
20573951411479038 ~1988
205742411234454479 ~1989
20574551411491038 ~1988
20574611411492238 ~1988
205746771234480639 ~1989
20575403411508078 ~1988
20575463411509278 ~1988
20575631411512638 ~1988
20575991411519838 ~1988
20578199411563998 ~1988
20578511411570238 ~1988
20579291411585838 ~1988
20579711411594238 ~1988
20581019411620398 ~1988
Exponent Prime Factor Digits Year
20581091411621838 ~1988
20581259411625198 ~1988
20581499411629998 ~1988
20581559411631198 ~1988
20581703411634078 ~1988
20581811411636238 ~1988
20581871411637438 ~1988
20581919411638398 ~1988
20582183411643678 ~1988
20582483411649678 ~1988
20582759411655198 ~1988
20583071411661438 ~1988
20583323411666478 ~1988
20583383411667678 ~1988
205840131235040799 ~1989
205843011235058079 ~1989
20584631411692638 ~1988
20585063411701278 ~1988
20585651411713038 ~1988
20585843411716878 ~1988
20585879411717598 ~1988
205863591646908739 ~1990
20587631411752638 ~1988
20587661164701288110 ~1992
205884611235307679 ~1989
1438
GIMPS The Prime Pages FactorDb.com
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25-05-04