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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
19569899391397998 ~1988
195699731174198399 ~1989
195701692739823679 ~1990
19570259426631646310 ~1993
195703371565626979 ~1989
19570559391411198 ~1988
195709131174254799 ~1989
195710332739944639 ~1990
19571291391425838 ~1988
195717313131476979 ~1990
19571759391435198 ~1988
19571771391435438 ~1988
19572263391445278 ~1988
19573139391462798 ~1988
19573199391463998 ~1988
19573343391466878 ~1988
19573583391471678 ~1988
195739971174439839 ~1989
19574003391480078 ~1988
19575071391501438 ~1988
19575383391507678 ~1988
195755831957558319 ~1990
19575779391515598 ~1988
19575851391517038 ~1988
19576031391520638 ~1988
Exponent Prime Factor Digits Year
195763071566104579 ~1989
19576379391527598 ~1988
195763972740695599 ~1990
195767515089955279 ~1991
19577111391542238 ~1988
19577303391546078 ~1988
19577471391549438 ~1988
19577483391549678 ~1988
195775271957752719 ~1990
195777171566217379 ~1989
19577903391558078 ~1988
19578263391565278 ~1988
19579523391590478 ~1988
19579559391591198 ~1988
19579583391591678 ~1988
19579691391593838 ~1988
19579751391595038 ~1988
19580063391601278 ~1988
195806534307743679 ~1990
19581071391621438 ~1988
19581311391626238 ~1988
19581323391626478 ~1988
195815811566526499 ~1989
19581911391638238 ~1988
19582151391643038 ~1988
Exponent Prime Factor Digits Year
19582259391645198 ~1988
19582523391650478 ~1988
195829034699896739 ~1991
19582919391658398 ~1988
195831411174988479 ~1989
195831771566654179 ~1989
195832037833281219 ~1991
195835131175010799 ~1989
19583771391675438 ~1988
19583951391679038 ~1988
195862671566901379 ~1989
195863233133811699 ~1990
19586471391729438 ~1988
195865913525586399 ~1990
19586939391738798 ~1988
19587143391742878 ~1988
19587311391746238 ~1988
19587563391751278 ~1988
19587719391754398 ~1988
19587779391755598 ~1988
195879791958797919 ~1990
19588451391769038 ~1988
19588483317333424710 ~1993
19588763391775278 ~1988
19588883391777678 ~1988
Exponent Prime Factor Digits Year
19589291391785838 ~1988
19589519391790398 ~1988
19589963391799278 ~1988
195901491567211939 ~1989
19590479391809598 ~1988
19590839391816798 ~1988
19590911391818238 ~1988
19591031391820638 ~1988
19591499391829998 ~1988
19591571391831438 ~1988
19591619391832398 ~1988
19591739391834798 ~1988
19591931391838638 ~1988
19591991391839838 ~1988
19592003391840078 ~1988
195922811175536879 ~1989
19592369141065056910 ~1992
19593599391871998 ~1988
195940193526923439 ~1990
19594031391880638 ~1988
19594559391891198 ~1988
19595003391900078 ~1988
19595123391902478 ~1988
195954313527177599 ~1990
19595621329206432910 ~1993
1404
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25-05-04