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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
25810283516205678 ~1989
258105114645891999 ~1991
25810619516212398 ~1989
25810679516213598 ~1989
25811039516220798 ~1989
25811171516223438 ~1989
25811339516226798 ~1989
258113396194721379
25811399516227998 ~1989
258114171548685039 ~1990
258126731548760399 ~1990
258127011548762079 ~1990
258129011548774079 ~1990
25813283516265678 ~1989
25814003516280078 ~1989
25814111516282238 ~1989
258145492065163939 ~1990
25814699516293998 ~1989
25814903516298078 ~1989
258149811548898879 ~1990
25815371516307438 ~1989
25815563516311278 ~1989
258156131548936799 ~1990
25816391516327838 ~1989
25816919516338398 ~1989
Exponent Prime Factor Digits Year
25818011516360238 ~1989
25818263516365278 ~1989
25818307170400826310 ~1993
25818959516379198 ~1989
25819919516398398 ~1989
25821443516428878 ~1989
25821611516432238 ~1989
25822091516441838 ~1989
258226137746783919 ~1992
258239212065913699 ~1990
25824119516482398 ~1989
258241331549447999 ~1990
25824203516484078 ~1989
25824611516492238 ~1989
25824719516494398 ~1989
25824803516496078 ~1989
25825409330565235310 ~1993
258254836198115939 ~1992
25825799516515998 ~1989
25826219516524398 ~1989
25826543516530878 ~1989
25827419516548398 ~1989
258277492066219939 ~1990
25828259516565198 ~1989
25828871516577438 ~1989
Exponent Prime Factor Digits Year
258289034132624499 ~1991
258293931549763599 ~1990
25829543516590878 ~1989
25830179516603598 ~1989
258301996199247779 ~1992
25830611516612238 ~1989
258306172066449379 ~1990
25831259516625198 ~1989
25831523516630478 ~1989
25831703516634078 ~1989
258317476199619299 ~1992
258323577749707119 ~1992
25832399516647998 ~1989
25832699516653998 ~1989
25833023516660478 ~1989
258333731550002399 ~1990
25833443516668878 ~1989
25833539516670798 ~1989
25833911516678238 ~1989
25834031516680638 ~1989
258342411550054479 ~1990
25834559516691198 ~1989
25834799516695998 ~1989
25834871516697438 ~1989
25835531516710638 ~1989
Exponent Prime Factor Digits Year
258362531550175199 ~1990
25836803516736078 ~1989
25837139516742798 ~1989
25837403516748078 ~1989
258380531550283199 ~1990
25838171516763438 ~1989
25838363516767278 ~1989
25839251516785038 ~1989
25839479516789598 ~1989
258396411550378479 ~1990
258400931550405599 ~1990
25840163516803278 ~1989
25840631516812638 ~1989
25841099516821998 ~1989
25841723516834478 ~1989
258417236202013539
25841771516835438 ~1989
25842191516843838 ~1989
25842599516851998 ~1989
25843463516869278 ~1989
25843511516870238 ~1989
25843523516870478 ~1989
258440812067526499 ~1990
25844831516896638 ~1989
25845419516908398 ~1989
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25-04-13