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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
197782331186693999 ~1989
19778663395573278 ~1988
19779059395581198 ~1988
197791631977916319 ~1990
19779659395593198 ~1988
19779863395597278 ~1988
197801572769221999 ~1990
19780259395605198 ~1988
19780499395609998 ~1988
19780679395613598 ~1988
197813273560638879 ~1990
19781423395628478 ~1988
19781543395630878 ~1988
19782023395640478 ~1988
19782299395645998 ~1988
19782419395648398 ~1988
19783241692413435110 ~1993
19783619395672398 ~1988
19783871395677438 ~1988
197839573165433139 ~1990
197841971187051839 ~1989
19785131395702638 ~1988
197853411187120479 ~1989
19786703395734078 ~1988
197867571582940579 ~1989
Exponent Prime Factor Digits Year
19786979395739598 ~1988
197874371187246239 ~1989
19787699395753998 ~1988
197878496332111699 ~1991
19788011395760238 ~1988
197883891583071139 ~1989
197885811583086499 ~1989
19788683395773678 ~1988
197887811187326879 ~1989
19789151395783038 ~1988
19789631395792638 ~1988
197897273562150879 ~1990
19789799395795998 ~1988
19789883395797678 ~1988
197900332770604639 ~1990
197903411187420479 ~1989
19790579395811598 ~1988
19790651395813038 ~1988
197910971187465839 ~1989
19791203395824078 ~1988
197916373166661939 ~1990
19792163395843278 ~1988
19792511395850238 ~1988
197929791583438339 ~1989
197929871979298719 ~1990
Exponent Prime Factor Digits Year
19793099395861998 ~1988
19793519395870398 ~1988
19794083395881678 ~1988
19794311395886238 ~1988
19794479395889598 ~1988
19794539395890798 ~1988
197946292771248079 ~1990
197947391979473919 ~1990
19794959395899198 ~1988
19795799395915998 ~1988
19796411395928238 ~1988
19797023395940478 ~1988
19797191395943838 ~1988
19797203395944078 ~1988
197972691583781539 ~1989
19797539395950798 ~1988
197976711583813699 ~1989
197979011187874079 ~1989
19797983395959678 ~1988
19798451395969038 ~1988
197984513563721199
19798643395972878 ~1988
197989271979892719 ~1990
197990572771867999 ~1990
197991918315660239 ~1991
Exponent Prime Factor Digits Year
19799231395984638 ~1988
19799459395989198 ~1988
19799519395990398 ~1988
19799579395991598 ~1988
19800239396004798 ~1988
198002511584020099 ~1989
198002811584022499 ~1989
19800491396009838 ~1988
19800611396012238 ~1988
19800743396014878 ~1988
19801511396030238 ~1988
198019492772272879 ~1990
19802663396053278 ~1988
19802771396055438 ~1988
19802879396057598 ~1988
19802963396059278 ~1988
19803323396066478 ~1988
19803431396068638 ~1988
19803743396074878 ~1988
19804079396081598 ~1988
19804223396084478 ~1988
19804283396085678 ~1988
19804871396097438 ~1988
198048713564876799
198060011188360079 ~1989
1456
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25-10-20