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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 Dig. Year
40448649185980897298371912 ~2022
40449477800380898955600712 ~2022
40453471838380906943676712 ~2022
40455440821180910881642312 ~2022
40456447241980912894483912 ~2022
40458689425180917378850312 ~2022
4045922964015502...31053714 2025
40464988832380929977664712 ~2022
4046520337018012...67279914 2026
40465694701180931389402312 ~2022
40465911023980931822047912 ~2022
40466951933980933903867912 ~2022
40467864719980935729439912 ~2022
40468236581980936473163912 ~2022
4046942604492913...52328115 2025
40469913163180939826326312 ~2022
4047146758875261...86531114 2025
40472460428380944920856712 ~2022
40474751753980949503507912 ~2022
40479149888380958299776712 ~2022
40481267869180962535738312 ~2022
40484788802380969577604712 ~2022
4048491513532850...55251315 2025
40484929549180969859098312 ~2022
40490541239980981082479912 ~2022
Exponent Prime Factor Dig. Year
40490619013180981238026312 ~2022
40493026643980986053287912 ~2022
40495406119180990812238312 ~2022
40497215369980994430739912 ~2022
40499053694380998107388712 ~2022
40499061473980998122947912 ~2022
40500609431981001218863912 ~2022
40501836986381003673972712 ~2022
40513920674381027841348712 ~2022
40514109823181028219646312 ~2022
40516132979981032265959912 ~2022
40523497033181046994066312 ~2022
40523569001981047138003912 ~2022
4052409389171069...87408915 2025
40524816595181049633190312 ~2022
4052503433218996...21726314 2025
40527129392381054258784712 ~2022
40527247633181054495266312 ~2022
40528997149181057994298312 ~2022
4053064840674571...02757715 2025
40532562427181065124854312 ~2022
4053892788911161...99602317 2026
4054818165135757...94484714 2025
4054880246631240...54687915 2025
40554147044381108294088712 ~2022
Exponent Prime Factor Dig. Year
40556319649181112639298312 ~2022
40557419324381114838648712 ~2022
40560102767981120205535912 ~2022
40560452333981120904667912 ~2022
40563702047981127404095912 ~2022
40563755696381127511392712 ~2022
40565188103981130376207912 ~2022
40566260623181132521246312 ~2022
4057064211299087...33289714 2025
40573643705981147287411912 ~2022
40573941463181147882926312 ~2022
40575486811181150973622312 ~2022
40577152217981154304435912 ~2022
40578226826381156453652712 ~2022
40583189600381166379200712 ~2022
40585039967981170079935912 ~2022
40585684196381171368392712 ~2022
40585887869981171775739912 ~2022
40586015891981172031783912 ~2022
40587606619181175213238312 ~2022
40588713689981177427379912 ~2022
40591236344381182472688712 ~2022
40591700474381183400948712 ~2022
40593458305181186916610312 ~2022
40600114099181200228198312 ~2022
Exponent Prime Factor Dig. Year
4060129223391396...28461715 2025
4060472285896496...57424114 2025
40611077936381222155872712 ~2022
40611441829181222883658312 ~2022
4061852557814703...19439915 2026
40619461273181238922546312 ~2022
40626244496381252488992712 ~2022
4062764623675606...80664714 2025
40631535125981263070251912 ~2022
40632502625981265005251912 ~2022
4063402193934469...13323114 2026
40634541805181269083610312 ~2022
40636641367181273282734312 ~2022
40636967192381273934384712 ~2022
40636998133181273996266312 ~2022
4063738420519752...09224114 2025
40637590799981275181599912 ~2022
40639284494381278568988712 ~2022
40640224415981280448831912 ~2022
40641712297181283424594312 ~2022
4064202067019997...84844714 2025
40643301889181286603778312 ~2022
40648331708381296663416712 ~2022
40650996116381301992232712 ~2022
40651114979981302229959912 ~2022
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26-07-19