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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
8444123168882478 ~1985
8444363168887278 ~1985
8444573506674398 ~1986
8444591168891838 ~1985
84449571182293999 ~1987
84455231351283699 ~1987
84456013378240419 ~1988
8445683168913678 ~1985
8445707675656578 ~1987
8445961506757678 ~1986
8446019168920398 ~1985
8446019675681538
8446063844606318 ~1987
8446283168925678 ~1985
8446913506814798 ~1986
8446979168939598 ~1985
8447111168942238 ~1985
8447171675773698 ~1987
8447177506830638 ~1986
8447423168948478 ~1985
8447591168951838 ~1985
8447653506859198 ~1986
8447711168954238 ~1985
8448017506881038 ~1986
8448197506891838 ~1986
Exp. Prime Factor Digits Year
8448431168968638 ~1985
84484312196592079
8448551168971038 ~1985
8448851168977038 ~1985
8449097506945838 ~1986
8449139168982798 ~1985
8449223168984478 ~1985
8449361506961678 ~1986
8449409675952738 ~1987
8449439168988798 ~1985
8449513506970798 ~1986
8449711844971118 ~1987
8449979168999598 ~1985
84500691183009679 ~1987
8450291676023298 ~1987
8450423169008478 ~1985
8450483169009678 ~1985
8450881507052878 ~1986
8450947845094718 ~1987
8450969676077538 ~1987
8451041507062478 ~1986
8451271845127118 ~1987
8451491169029838 ~1985
8451517507091038 ~1986
8451851169037038 ~1985
Exp. Prime Factor Digits Year
8451893507113598 ~1986
8452019169040398 ~1985
8452097507125838 ~1986
8452141507128478 ~1986
8452307676184578 ~1987
8452403169048078 ~1985
8452439169048798 ~1985
8452441507146478 ~1986
8452571169051438 ~1985
8452681507160878 ~1986
8452721507163278 ~1986
84528771183402799 ~1987
8453099169061998 ~1985
8453177676254178 ~1987
8453597676287778 ~1987
8453639169072798 ~1985
8453663169073278 ~1985
8453693507221598 ~1986
8453759169075198 ~1985
8453821507229278 ~1986
8453849676307938 ~1987
8453897507233838 ~1986
84539091183547279 ~1987
8453999169079998 ~1985
84540671521732079 ~1987
Exp. Prime Factor Digits Year
8454191169083838 ~1985
8454211845421118 ~1987
8454371752439019110 ~1992
8454623169092478 ~1985
84547391521853039 ~1987
8454923169098478 ~1985
8454947676395778 ~1987
8455091169101838 ~1985
8455151169103038 ~1985
8455259676420738 ~1987
8455301676424098 ~1987
8455561507333678 ~1986
8455597507335838 ~1986
8455633507337998 ~1986
84556911522024399 ~1987
8456039169120798 ~1985
8456213507372798 ~1986
84562214058986099 ~1988
8456419845641918 ~1987
8456467845646718 ~1987
8456543169130878 ~1985
8456753507405198 ~1986
84567534735781699
8456761507405678 ~1986
8456891169137838 ~1985
921
GIMPS The Prime Pages FactorDb.com
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25-04-13