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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
428138385627677 ~1983
428144385628877 ~1983
4281463428146318 ~1984
42815831798264879 ~1986
428173185634637 ~1983
428177985635597 ~1983
4281791342543298 ~1984
428186385637277 ~1983
4281967428196718 ~1984
4282273256936398 ~1984
42823791027770979 ~1985
4282423100208698310 ~1988
4282457256947438 ~1984
4282723428272318 ~1984
4282753256965198 ~1984
4282801256968078 ~1984
4282897256973838 ~1984
4282979342638338 ~1984
4283087342646978 ~1984
428335185667037 ~1983
428339985667997 ~1983
42835811713432419 ~1986
4283687342694978 ~1984
42839631113830399 ~1985
428401185680237 ~1983
Exp. Prime Factor Digits Year
428402385680477 ~1983
4284223428422318 ~1984
428438385687677 ~1983
428441985688397 ~1983
4284461257067678 ~1984
4284677342774178 ~1984
4285049599906878 ~1985
4285357685657138 ~1985
42854472485559279 ~1986
428549985709997 ~1983
428551185710237 ~1983
428555985711197 ~1983
428564385712877 ~1983
4285661257139678 ~1984
4285667100284607910 ~1988
428567985713597 ~1983
4285859342868738 ~1984
4285861257151678 ~1984
4285913257154798 ~1984
4285961342876898 ~1984
4285993257159598 ~1984
42860811285824319 ~1986
4286251428625118 ~1984
4286573257194398 ~1984
4286617257197038 ~1984
Exp. Prime Factor Digits Year
428669985733997 ~1983
4287089600192478 ~1985
4287137600199198 ~1985
4287313257238798 ~1984
428753985750797 ~1983
4287593257255598 ~1984
428759985751997 ~1983
428762385752477 ~1983
428771985754397 ~1983
428774385754877 ~1983
428785185757037 ~1983
4287979428797918 ~1984
4287989600318478 ~1985
428810385762077 ~1983
4288147428814718 ~1984
4288217257293038 ~1984
4288309943427998 ~1985
4288457343076578 ~1984
42884892315784079 ~1986
4288589343087138 ~1984
4288759428875918 ~1984
4288789943533598 ~1985
428911185782237 ~1983
428947185789437 ~1983
4289653257379198 ~1984
Exp. Prime Factor Digits Year
4289939343195138 ~1984
428996385799277 ~1983
4290017257401038 ~1984
4290151429015118 ~1984
4290373943882078 ~1985
4290437257426238 ~1984
4290487686477938 ~1985
429049185809837 ~1983
4290641343251298 ~1984
429068385813677 ~1983
429089985817997 ~1983
429097185819437 ~1983
4291033257461998 ~1984
4291073257464398 ~1984
429110385822077 ~1983
429121185824237 ~1983
4291213257472798 ~1984
4291291429129118 ~1984
4291319343305538 ~1984
429158385831677 ~1983
4291649343331938 ~1984
4291697257501838 ~1984
4291717257503038 ~1984
429175185835037 ~1983
4291933686709298 ~1985
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25-05-04