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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
252553971515323839 ~1990
25256039505120798 ~1989
25256711505134238 ~1989
25256879505137598 ~1989
25257623505152478 ~1989
25257803505156078 ~1989
252579131515474799 ~1990
25257923505158478 ~1989
25258451505169038 ~1989
25259291505185838 ~1989
25259519505190398 ~1989
25260023505200478 ~1989
252602817578084319 ~1992
25260311505206238 ~1989
25260611505212238 ~1989
25261283505225678 ~1989
252613611515681679 ~1990
252615472020923779 ~1990
25261679505233598 ~1989
25262999505259998 ~1989
252630131515780799 ~1990
25263431505268638 ~1989
25263443505268878 ~1989
25263779505275598 ~1989
25263971505279438 ~1989
Exponent Prime Factor Digits Year
252640211515841279 ~1990
25264859505297198 ~1989
25265171505303438 ~1989
25265291505305838 ~1989
25265711505314238 ~1989
25266359505327198 ~1989
25267043505340878 ~1989
252675771516054639 ~1990
25268291505365838 ~1989
252683571516101439 ~1990
252687171516123039 ~1990
25268819505376398 ~1989
25269551505391038 ~1989
25269983505399678 ~1989
252699971516199839 ~1990
25270139505402798 ~1989
25270499505409998 ~1989
25271423505428478 ~1989
25271531505430638 ~1989
252715316570598079
252720771516324639 ~1990
25272431505448638 ~1989
25272491505449838 ~1989
25272743505454878 ~1989
25272899505457998 ~1989
Exponent Prime Factor Digits Year
25273019505460398 ~1989
25273931505478638 ~1989
25274003505480078 ~1989
252740272021922179 ~1990
25274339505486798 ~1989
25274519505490398 ~1989
25274591505491838 ~1989
25274891505497838 ~1989
25275359505507198 ~1989
252753592022028739
25275611505512238 ~1989
25275623505512478 ~1989
25276019505520398 ~1989
252761512022092099 ~1990
25276523505530478 ~1989
25276703505534078 ~1989
25277099505541998 ~1989
25277243505544878 ~1989
25277639505552798 ~1989
25277711505554238 ~1989
25278443505568878 ~1989
252790214044643379 ~1991
25279211505584238 ~1989
25279283505585678 ~1989
252799792022398339 ~1990
Exponent Prime Factor Digits Year
25280471505609438 ~1989
25280891505617838 ~1989
25281299505625998 ~1989
25281719505634398 ~1989
25281923505638478 ~1989
252819432528194319 ~1990
25282811505656238 ~1989
25283759505675198 ~1989
25284191505683838 ~1989
25284323505686478 ~1989
25284419505688398 ~1989
25284599505691998 ~1989
252849712022797699 ~1990
25285031505700638 ~1989
25286711505734238 ~1989
25286759505735198 ~1989
25286903505738078 ~1989
252869994551659839 ~1991
25287011505740238 ~1989
25288691505773838 ~1989
25289039505780798 ~1989
25289051505781038 ~1989
252895672023165379 ~1990
25289651505793038 ~1989
25290431505808638 ~1989
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