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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
218205734800526079 ~1991
21820691436413838 ~1988
21820703436414078 ~1988
21820751436415038 ~1988
21820811436416238 ~1988
21821003436420078 ~1988
218218191745745539 ~1990
21821843436436878 ~1988
21822011436440238 ~1988
21822023436440478 ~1988
218220375237288899 ~1991
21822491436449838 ~1988
218224911745799299
21823103109115515110 ~1992
218235672182356719 ~1990
21823981349183696110 ~1993
218241371309448239 ~1989
218242039166165279 ~1992
21824531436490638 ~1988
21824879436497598 ~1988
218249411309496479 ~1989
21825071436501438 ~1988
218254911746039299 ~1990
21825971436519438 ~1988
218259893055638479 ~1990
Exponent Prime Factor Digits Year
21826151436523038 ~1988
218262131309572799 ~1989
21826439436528798 ~1988
21826463436529278 ~1988
21826859436537198 ~1988
21826979436539598 ~1988
21827567104772321710 ~1992
21827579436551598 ~1988
21828239436564798 ~1988
218283411746267299 ~1990
21828491436569838 ~1988
21828791436575838 ~1988
218291511746332099 ~1990
21829211436584238 ~1988
218292792182927919 ~1990
218293313929279599 ~1991
21829583436591678 ~1988
218296571309779439 ~1989
218298171746385379 ~1990
218299331309795999 ~1989
21830051436601038 ~1988
21830279436605598 ~1988
21830843436616878 ~1988
21830951436619038 ~1988
21831539436630798 ~1988
Exponent Prime Factor Digits Year
218315837422738239 ~1991
218316173056426399 ~1990
218317873493085939 ~1991
218319131309914799 ~1989
21832103436642078 ~1988
21832823436656478 ~1988
21833291436665838 ~1988
21833711436674238 ~1988
21833891436677838 ~1988
21834083436681678 ~1988
21834353209609788910 ~1992
21834623436692478 ~1988
21834671436693438 ~1988
21834899436697998 ~1988
218350973056913599 ~1990
21835559436711198 ~1988
21835831196522479110 ~1992
218358673493738739 ~1991
218362032183620319 ~1990
21836651436733038 ~1988
218379291747034339 ~1990
21837983436759678 ~1988
21838451436769038 ~1988
21838763436775278 ~1988
21839099436781998 ~1988
Exponent Prime Factor Digits Year
21839123436782478 ~1988
218392736551781919 ~1991
218393712183937119 ~1990
21839459436789198 ~1988
218395611747164899 ~1990
21839563139773203310 ~1992
218396519172653439 ~1992
21839963436799278 ~1988
21840491436809838 ~1988
21840551436811038 ~1988
21840829244617284910 ~1993
21841217117942571910 ~1992
21841331436826638 ~1988
21841619436832398 ~1988
21841691436833838 ~1988
218418171310509039 ~1989
21842699436853998 ~1988
21842963436859278 ~1988
21843383436867678 ~1988
21843803436876078 ~1988
21844019436880398 ~1988
21844139436882798 ~1988
21844919436898398 ~1988
218452371747618979 ~1990
218453091747624739 ~1990
1490
GIMPS The Prime Pages FactorDb.com
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25-06-08