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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
195865297117519178310 ~1997
1958693811096868533711 ~1999
1958752193917504399 ~1996
195884021117530412710 ~1997
1958902313917804639 ~1996
195896273274254782310 ~1998
195900121117540072710 ~1997
1959099191410551416911 ~2000
1959101393918202799 ~1996
1959163793918327599 ~1996
1959260993918521999 ~1996
1959273833918547679 ~1996
1959281513918563039 ~1996
1959327833918655679 ~1996
195939101587817303110 ~1999
195941957274318739910 ~1998
195942517587827551110 ~1999
1959445793918891599 ~1996
1959495113918990239 ~1996
1959502671763552403111 ~2000
1959510833919021679 ~1996
1959556913919113839 ~1996
1959630113919260239 ~1996
1959640193919280399 ~1996
195965461117579276710 ~1997
Exponent Prime Factor Digits Year
1959734393919468799 ~1996
1959764633174818700711 ~2000
1959768833919537679 ~1996
195978641117587184710 ~1997
1959796433919592879 ~1996
1959806993919613999 ~1996
1959825131881432124911 ~2000
195989609156791687310 ~1997
1959899871293533914311 ~1999
1959915113919830239 ~1996
1959962993919925999 ~1996
196002641117601584710 ~1997
196011271196011271110 ~1997
1960238031293757099911 ~1999
1960249313920498639 ~1996
1960369313920738639 ~1996
196037297156829837710 ~1997
1960417095175501117711 ~2001
1960466393920932799 ~1996
196050167156840133710 ~1997
196054631627374819310 ~1999
196063129941103019310 ~1999
1960720913921441839 ~1996
1960732433921464879 ~1996
1960756193921512399 ~1996
Exponent Prime Factor Digits Year
196077773117646663910 ~1997
1960843193921686399 ~1996
196091783470620279310 ~1998
1960928393921856799 ~1996
196096319352973374310 ~1998
1960999793921999599 ~1996
196102169274543036710 ~1998
196103741156882992910 ~1997
1961058233922116479 ~1996
196110539156888431310 ~1997
1961108993922217999 ~1996
1961113193922226399 ~1996
1961152913922305839 ~1996
196119631313791409710 ~1998
1961270771059086215911 ~1999
196146241117687744710 ~1997
1961465513922931039 ~1996
1961483993922967999 ~1996
1961498513922997039 ~1996
1961536193923072399 ~1996
1961557793923115599 ~1996
196156439627700604910 ~1999
196161551156929240910 ~1997
1961690633923381279 ~1996
1961764193923528399 ~1996
Exponent Prime Factor Digits Year
1961892113923784239 ~1996
1961917913923835839 ~1996
1962026633924053279 ~1996
1962040313924080639 ~1996
1962049193924098399 ~1996
1962066113924132239 ~1996
1962076313924152639 ~1996
196212713117727627910 ~1997
1962137091569709672111 ~2000
1962151913924303839 ~1996
196216187510162086310 ~1998
196217717117730630310 ~1997
1962301793924603599 ~1996
1962306233924612479 ~1996
1962373193924746399 ~1996
196238267156990613710 ~1997
1962406313924812639 ~1996
196246601941983684910 ~1999
1962486593924973199 ~1996
1962519833925039679 ~1996
1962604793925209599 ~1996
1962614633925229279 ~1996
196264951196264951110 ~1997
1962724913925449839 ~1996
1962791033925582079 ~1996
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25-06-08