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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
12281603245632078 ~1986
12282191245643838 ~1986
12282353736941198 ~1988
12282983245659678 ~1986
12284201737052078 ~1988
12284879245697598 ~1986
12285011245700238 ~1986
12285263245705278 ~1986
12285359245707198 ~1986
122853792211368239 ~1989
12285451117940329710 ~1990
12285671245713438 ~1986
12285899982871938 ~1988
12286139245722798 ~1986
122861477125965279 ~1990
12286601982928098 ~1988
12286811245736238 ~1986
12286919245738398 ~1986
12286931245738638 ~1986
12287321737239278 ~1988
122873333686199919 ~1989
12287711245754238 ~1986
12287771245755438 ~1986
12287993737279598 ~1988
12288071245761438 ~1986
Exponent Prime Factor Digits Year
122880975652524639 ~1990
12288119245762398 ~1986
12288443245768878 ~1986
12289247983139778 ~1988
122894933686847919 ~1989
122896871228968719 ~1988
12289813737388798 ~1988
12290653737439198 ~1988
12290963245819278 ~1986
12290981737458878 ~1988
122914035162389279 ~1990
122917031229170319 ~1988
12292361737541678 ~1988
12292463245849278 ~1986
12293279245865598 ~1986
12293951245879038 ~1986
12294041737642478 ~1988
12294143245882878 ~1986
12294203245884078 ~1986
12294221737653278 ~1988
12294497737669838 ~1988
12294497983559778
12294599245891998 ~1986
12294641737678478 ~1988
12295559983644738 ~1988
Exponent Prime Factor Digits Year
12295861737751678 ~1988
12295931245918638 ~1986
12296051245921038 ~1986
12296171245923438 ~1986
122964071229640719 ~1988
12296413737784798 ~1988
12296519245930398 ~1986
12296891245937838 ~1986
12297023245940478 ~1986
12297143245942878 ~1986
12297473737848398 ~1988
122977871229778719 ~1988
122978532951484739 ~1989
12298277737896638 ~1988
12298679245973598 ~1986
12298991245979838 ~1986
122991494919659619 ~1990
12299351245987038 ~1986
12299531245990638 ~1986
12300053738003198 ~1988
12300713738042798 ~1988
12300997738059838 ~1988
123011033198286799 ~1989
12301391246027838 ~1986
123016092706353999 ~1989
Exponent Prime Factor Digits Year
12301703246034078 ~1986
12302183246043678 ~1986
12302273738136398 ~1988
123025131722351839 ~1988
123026831230268319 ~1988
123028131722393839 ~1988
12303857738231438 ~1988
12304139984331138 ~1988
12304283246085678 ~1986
12304337738260238 ~1988
12304703246094078 ~1986
12305197738311838 ~1988
12305231246104638 ~1986
123052392214943039 ~1989
12305653738339198 ~1988
12305879246117598 ~1986
12305879984470338
12306673155064079910 ~1991
12306743246134878 ~1986
12306779246135598 ~1986
12307271246145438 ~1986
12307391246147838 ~1986
123075791230757919 ~1988
12307703246154078 ~1986
12308123246162478 ~1986
1121
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25-04-13