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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
3938730023787746004710 ~2006
3938897243787779448710 ~2006
3939107423787821484710 ~2006
39391540612363492436711 ~2007
39391613813151329104911 ~2007
3939241151787848230310 ~2006
3939290471787858094310 ~2006
393929054310242155411912 ~2009
3939426191787885238310 ~2006
3939480791787896158310 ~2006
3939686519787937303910 ~2006
39398073372363884402311 ~2007
3939845159787969031910 ~2006
39401240095516173612711 ~2008
3940156403788031280710 ~2006
3940195223788039044710 ~2006
3940300139788060027910 ~2006
3940352303788070460710 ~2006
3940365491788073098310 ~2006
3940442531788088506310 ~2006
3940451303788090260710 ~2006
3940545131788109026310 ~2006
3940592531788118506310 ~2006
3940730459788146091910 ~2006
39407566372364453982311 ~2007
Exponent Prime Factor Digits Year
3940764983788152996710 ~2006
3940860551788172110310 ~2006
3940906643788181328710 ~2006
39409183372364551002311 ~2007
3941254643788250928710 ~2006
3941255399788251079910 ~2006
3941265623788253124710 ~2006
3941310203788262040710 ~2006
3941338883788267776710 ~2006
39414655732364879343911 ~2007
3941607023788321404710 ~2006
394179543711825386311112 ~2009
3941860259788372051910 ~2006
39418739113941873911111 ~2008
3941902511788380502310 ~2006
39420175517095631591911 ~2008
3942245063788449012710 ~2006
3942458939788491787910 ~2006
3942510359788502071910 ~2006
394253777311827613319112 ~2009
3942751619788550323910 ~2006
3942945659788589131910 ~2006
3943553651788710730310 ~2006
3943617383788723476710 ~2006
39436209316309793489711 ~2008
Exponent Prime Factor Digits Year
39436338732366180323911 ~2007
39437161913154972952911 ~2007
39438272412366296344711 ~2007
39438342473155067397711 ~2007
39439945135521592318311 ~2008
3944103563788820712710 ~2006
3944326283788865256710 ~2006
3944356079788871215910 ~2006
3944362739788872547910 ~2006
3944363603788872720710 ~2006
3944612123788922424710 ~2006
3944724299788944859910 ~2006
3944797583788959516710 ~2006
3944847359788969471910 ~2006
3945056831789011366310 ~2006
39452451673945245167111 ~2008
39458941313156715304911 ~2007
39459558793945955879111 ~2008
3945979343789195868710 ~2006
3946357631789271526310 ~2006
3946946231789389246310 ~2006
394695728310262088935912 ~2009
3947064791789412958310 ~2006
3947067023789413404710 ~2006
3947124143789424828710 ~2006
Exponent Prime Factor Digits Year
3947169371789433874310 ~2006
3947311079789462215910 ~2006
394752716312632086921712 ~2009
394757068915790282756112 ~2009
3947956403789591280710 ~2006
394823257321320455894312 ~2009
3948603623789720724710 ~2006
3948614963789722992710 ~2006
39486630713158930456911 ~2007
39486710332369202619911 ~2007
39490615613159249248911 ~2007
3949188263789837652710 ~2006
39492546775528956547911 ~2008
39493334813159466784911 ~2007
39494489532369669371911 ~2007
3949484783789896956710 ~2006
39499494073949949407111 ~2008
3950104271790020854310 ~2006
3950109659790021931910 ~2006
39501746532370104791911 ~2007
3950229383790045876710 ~2006
3950384279790076855910 ~2006
3950388551790077710310 ~2006
3950469923790093984710 ~2006
39507216372370432982311 ~2007
4259
GIMPS The Prime Pages FactorDb.com
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25-11-02