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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.
Exp. Prime Factor Digits Year
2500163650042398 ~1984
2500213400034098 ~1983
2500273150016398 ~1982
2500301150018078 ~1982
2500331650086078 ~1984
2500439200035138 ~1982
250055950011197 ~1981
2500621150037278 ~1982
2500651250065118 ~1983
2500709200056738 ~1982
2500937150056238 ~1982
2500999250099918 ~1983
2501143600274338 ~1984
2501189200095138 ~1982
2501197150071838 ~1982
2501299450233838 ~1983
2501417150085038 ~1982
2501507600361698 ~1984
2501591450286398 ~1983
2501591650413678
2501593550350478 ~1984
250165150033037 ~1981
2502191650569678 ~1984
2502343400374898 ~1983
2502359600566178 ~1984
Exp. Prime Factor Digits Year
2502551800816338 ~1984
2502559450460638 ~1983
250268350053677 ~1981
250271950054397 ~1981
2502793150167598 ~1982
25030692202700739 ~1985
250310350062077 ~1981
2503213400514098 ~1983
2503261550717438 ~1984
2503351250335118 ~1983
2503427600822498 ~1984
2503439801100498 ~1984
2503499200279938 ~1982
2503637150218238 ~1982
2503759250375918 ~1983
2503799450683838 ~1983
250385950077197 ~1981
2503931200314498 ~1982
2503979450716238 ~1983
2503997600959298 ~1984
2504147200331778 ~1982
250453150090637 ~1981
250454350090877 ~1981
2504563400730098 ~1983
2504639114712466310 ~1987
Exp. Prime Factor Digits Year
2504687601124898 ~1984
2504687651218638
2504717200377378 ~1982
250489150097837 ~1981
2505109551123998 ~1984
2505127450922878 ~1983
250514350102877 ~1981
2505143601234338
2505253400840498 ~1983
25053374960567279 ~1986
2505353350749438 ~1983
2505361551179438 ~1984
2505383601291938 ~1984
25054993257148719 ~1985
25055271252763519 ~1984
2505541150332478 ~1982
2505793601390338 ~1984
2505847250584718 ~1983
2505857601405698 ~1984
2505901150354078 ~1982
250598350119677 ~1981
2505991250599118 ~1983
2506033150361998 ~1982
250607950121597 ~1981
2506129551348398 ~1984
Exp. Prime Factor Digits Year
2506277150376638 ~1982
2506279451130238 ~1983
2506373150382398 ~1982
2506619451191438 ~1983
2506657150399438 ~1982
2506843250684318 ~1983
2506843601642338
250685950137197 ~1981
2507017752105118 ~1984
250705150141037 ~1981
2507213150432798 ~1982
2507227401156338 ~1983
2507413150444798 ~1982
25075971354102399 ~1984
25076415817727139 ~1986
2507707250770718 ~1983
2507773150466398 ~1982
2507863250786318 ~1983
250790350158077 ~1981
2508073551776078 ~1984
2508167200653378 ~1982
2508277752483118 ~1984
2508293150497598 ~1982
2508383652179598 ~1984
2508433551855278 ~1984
453
GIMPS The Prime Pages FactorDb.com
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25-12-14