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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
191969811151818879 ~1989
19197023383940478 ~1988
191972931151837599 ~1989
191974211151845279 ~1989
191975571535804579 ~1989
19197599383951998 ~1988
19198139383962798 ~1988
19198451383969038 ~1988
191988771151932639 ~1989
19199483383989678 ~1988
19199639383992798 ~1988
19200011384000238 ~1988
192006731152040399 ~1989
19201139384022798 ~1988
19201271384025438 ~1988
19201439384028798 ~1988
19201811384036238 ~1988
192023574608565699 ~1991
192023871536190979 ~1989
192027731152166399 ~1989
19203311384066238 ~1988
19203323384066478 ~1988
19203491384069838 ~1988
19203731384074638 ~1988
192037919601895519 ~1991
Exponent Prime Factor Digits Year
19203923384078478 ~1988
19204439384088798 ~1988
19204571384091438 ~1988
19204631384092638 ~1988
192049811152298879 ~1989
192051131152306799 ~1989
19205579384111598 ~1988
19205723384114478 ~1988
19205831384116638 ~1988
19205891384117838 ~1988
19206191384123838 ~1988
19207319384146398 ~1988
192073191536585539
19207511384150238 ~1988
19208303384166078 ~1988
192088633073418099 ~1990
19209251384185038 ~1988
19209683142151654310 ~1992
19210043384200878 ~1988
19210199384203998 ~1988
19210403384208078 ~1988
19210679384213598 ~1988
192108313457949599 ~1990
192109871921098719 ~1990
19211183384223678 ~1988
Exponent Prime Factor Digits Year
192115311536922499 ~1989
192115871921158719 ~1990
19211651384233038 ~1988
192117138837387999 ~1991
192121911536975299 ~1989
19212299384245998 ~1988
19212911384258238 ~1988
19213079384261598 ~1988
19213679384273598 ~1988
19213739384274798 ~1988
19214183384283678 ~1988
192143811152862879 ~1989
19214483384289678 ~1988
192145971537167779 ~1989
19214771384295438 ~1988
19214999384299998 ~1988
192151994611647779 ~1991
19215239384304798 ~1988
19215359384307198 ~1988
192153771152922639 ~1989
192161514996199279 ~1991
19216199384323998 ~1988
192162971152977839 ~1989
19216871384337438 ~1988
19216943384338878 ~1988
Exponent Prime Factor Digits Year
192169791537358339 ~1989
192172991921729919 ~1990
192175911537407299 ~1989
192188211153129279 ~1989
19219463384389278 ~1988
192195613075129779 ~1990
19219703384394078 ~1988
19219883384397678 ~1988
19221071384421438 ~1988
19221803384436078 ~1988
192219471537755779 ~1989
19221971384439438 ~1988
19222103384442078 ~1988
19223111384462238 ~1988
192232877689314819 ~1991
19223531384470638 ~1988
192236411153418479 ~1989
192237611153425679 ~1989
19223819384476398 ~1988
19224011384480238 ~1988
19224083384481678 ~1988
19224503384490078 ~1988
192246911922469119 ~1990
19224899384497998 ~1988
19225319384506398 ~1988
1408
GIMPS The Prime Pages FactorDb.com
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25-07-08