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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
19168769471916876947111 ~2005
1916920823383384164710 ~2004
1916921771383384354310 ~2004
191694654113418625787112 ~2007
1916976683383395336710 ~2004
1917110771383422154310 ~2004
19171620891533729671311 ~2005
1917261779383452355910 ~2004
1917286583383457316710 ~2004
1917336731383467346310 ~2004
19176547971534123837711 ~2005
1917704543383540908710 ~2004
19177482011150648920711 ~2005
19178938211150736292711 ~2005
19179243737671697492111 ~2007
1917984851383596970310 ~2004
1918037651383607530310 ~2004
1918093511383618702310 ~2004
1918210799383642159910 ~2004
19182912891534633031311 ~2005
1918336811383667362310 ~2004
19183436211151006172711 ~2005
1918395491383679098310 ~2004
19184385191918438519111 ~2005
1918458383383691676710 ~2004
Exponent Prime Factor Digits Year
19184977391918497739111 ~2005
19185019394604404653711 ~2006
19185634034604552167311 ~2006
1918569071383713814310 ~2004
1918631063383726212710 ~2004
1918639991383727998310 ~2004
19186522731151191363911 ~2005
1918664651383732930310 ~2004
1918719251383743850310 ~2004
1918772279383754455910 ~2004
1918772963383754592710 ~2004
1918822751383764550310 ~2004
1918854323383770864710 ~2004
19190558931151433535911 ~2005
1919058899383811779910 ~2004
19190848011151450880711 ~2005
1919188571383837714310 ~2004
1919202431383840486310 ~2004
1919266379383853275910 ~2004
1919270159383854031910 ~2004
19193263731151595823911 ~2005
1919348003383869600710 ~2004
19194335773071093723311 ~2006
1919447063383889412710 ~2004
19194492617677797044111 ~2007
Exponent Prime Factor Digits Year
1919481359383896271910 ~2004
19195180371151710822311 ~2005
1919555003383911000710 ~2004
1919583443383916688710 ~2004
19196255833071400932911 ~2006
1919684831383936966310 ~2004
1919731223383946244710 ~2004
19198074738831114375911 ~2007
1919813123383962624710 ~2004
1919904743383980948710 ~2004
1919958983383991796710 ~2004
1919993051383998610310 ~2004
19200053713072008593711 ~2006
1920054371384010874310 ~2004
1920095783384019156710 ~2004
1920132059384026411910 ~2004
1920157559384031511910 ~2004
1920174359384034871910 ~2004
19202063331152123799911 ~2005
1920207059384041411910 ~2004
19203318114992862708711 ~2006
1920337511384067502310 ~2004
1920353339384070667910 ~2004
1920396563384079312710 ~2004
1920500579384100115910 ~2004
Exponent Prime Factor Digits Year
1920500723384100144710 ~2004
1920518903384103780710 ~2004
1920531839384106367910 ~2004
1920554063384110812710 ~2004
192057250935338534165712 ~2008
1920586463384117292710 ~2004
19206042671920604267111 ~2005
19206862194609646925711 ~2006
1920887231384177446310 ~2004
1920905663384181132710 ~2004
19209215811152552948711 ~2005
1920925151384185030310 ~2004
1920987863384197572710 ~2004
1920999623384199924710 ~2004
19210128531152607711911 ~2005
19210181571152610894311 ~2005
192105015157247294499912 ~2009
1921060019384212003910 ~2004
19210632171152637930311 ~2005
1921070111384214022310 ~2004
1921119719384223943910 ~2004
1921181963384236392710 ~2004
1921212539384242507910 ~2004
19212258614226696894311 ~2006
19212388191536991055311 ~2005
4194
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26-04-05