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Mersenne numbers P-1 factors that should have already been found but were missed:
14,072 exponents (21,117 factors) like this known
Exponent range: M to M
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ExponentFactor BitsAssignment
M11234.5236Factor=11,4,5
Pminus1=1,2,11,-1,1000000,100000000,4
896.4757Factor=11,6,7
Pminus1=1,2,11,-1,1000000,100000000,6
M1,2976487396419944449755.8485Factor=1297,55,56
Pminus1=1,2,1297,-1,10000000000,1000000000000,55
1209739201331343.4598Factor=1297,43,44
Pminus1=1,2,1297,-1,10000000000,1000000000000,43
M1,31971229273414268749.3395Factor=1319,49,50
Pminus1=1,2,1319,-1,10000000000,1000000000000,49
M1,3672976963148140460154.7247Factor=1367,54,55
Pminus1=1,2,1367,-1,10000000000,100000000000,54
256175921.2887Factor=1367,21,22
Pminus1=1,2,1367,-1,10000000000,100000000000,21
23239117.8262Factor=1367,17,18
Pminus1=1,2,1367,-1,10000000000,100000000000,17
6561716.0018Factor=1367,16,17
Pminus1=1,2,1367,-1,10000000000,100000000000,16
1093713.4169Factor=1367,13,14
Pminus1=1,2,1367,-1,10000000000,100000000000,13
M1,38146285328362338.7518Factor=1381,38,39
Pminus1=1,2,1381,-1,10000000000,100000000000,38
828713.0166Factor=1381,13,14
Pminus1=1,2,1381,-1,10000000000,100000000000,13
M3,323231280921.1412Factor=3323,21,22
Pminus1=1,2,3323,-1,100000000,5000000000,21
M10,13314186317.1141Factor=10133,17,18
Pminus1=1,2,10133,-1,100000000,100000000,17
M11,11347828931220959727958.7307Factor=11113,58,59
Pminus1=1,2,11113,-1,2000000000,10000000000,58
241618534836141.1359Factor=11113,41,42
Pminus1=1,2,11113,-1,2000000000,10000000000,41
M11,26145095325043465748.6800Factor=11261,48,49
Pminus1=1,2,11261,-1,20000000,200000000,48
M11,2732797949777750344.6694Factor=11273,44,45
Pminus1=1,2,11273,-1,20000000,200000000,44
60874319.2155Factor=11273,19,20
Pminus1=1,2,11273,-1,20000000,200000000,19
M11,2871355426483933.6580Factor=11287,33,34
Pminus1=1,2,11287,-1,100000000,1000000000,33
M11,29927117718.0489Factor=11299,18,19
Pminus1=1,2,11299,-1,100000000,1000000000,18
M11,329109454461292124168759.9250Factor=11329,59,60
Pminus1=1,2,11329,-1,3500000000,235000000000,59
44561488728.7312Factor=11329,28,29
Pminus1=1,2,11329,-1,3500000000,235000000000,28
M11,3532193554000934.3526Factor=11353,34,35
Pminus1=1,2,11353,-1,700000000,35000000000,34
M11,41180366835432739.5478Factor=11411,39,40
Pminus1=1,2,11411,-1,10000000,1000000000,39
M11,70118721717.5144Factor=11701,17,18
Pminus1=1,2,11701,-1,10000000,10000000,17
29421930496546971490367.9955Factor=11701,67,68
Pminus1=1,2,11701,-1,10000000,10000000,67
33733983128.3296Factor=11701,28,29
Pminus1=1,2,11701,-1,10000000,10000000,28
7020716.0993Factor=11701,16,17
Pminus1=1,2,11701,-1,10000000,10000000,16
M12,347266695321.3468Factor=12347,21,22
Pminus1=1,2,12347,-1,10000000,100000000,21
M13,109314616121.5852Factor=13109,21,22
Pminus1=1,2,13109,-1,10000000000,100000000000,21
7613707326.1821Factor=13109,26,27
Pminus1=1,2,13109,-1,10000000000,100000000000,26
18352717.4856Factor=13109,17,18
Pminus1=1,2,13109,-1,10000000000,100000000000,17
M13,3814930071554335.5209Factor=13381,35,36
Pminus1=1,2,13381,-1,100000000,100000000,35
M14,051445651137737144960137771.9164Factor=14051,71,72
Pminus1=1,2,14051,-1,100000000,100000000,71
M14,28114807360434734492787167.0049Factor=14281,67,68
Pminus1=1,2,14281,-1,10000000,100000000,67
180566107930.7499Factor=14281,30,31
Pminus1=1,2,14281,-1,10000000,100000000,30
1393825723.7325Factor=14281,23,24
Pminus1=1,2,14281,-1,10000000,100000000,23
M14,5911295680923.6272Factor=14591,23,24
Pminus1=1,2,14591,-1,1000000000,50000000000,23
137695267130.3588Factor=14591,30,31
Pminus1=1,2,14591,-1,1000000000,50000000000,30
72955119.4767Factor=14591,19,20
Pminus1=1,2,14591,-1,1000000000,50000000000,19
M15,1313831196947227945.1229Factor=15131,45,46
Pminus1=1,2,15131,-1,2500000000,25000000000,45
27235918.0551Factor=15131,18,19
Pminus1=1,2,15131,-1,2500000000,25000000000,18
M15,137151750602246449302360.3964Factor=15137,60,61
Pminus1=1,2,15137,-1,2500000000,25000000000,60
703470883332.7118Factor=15137,32,33
Pminus1=1,2,15137,-1,2500000000,25000000000,32
M19,819228887748195141.0578Factor=19819,41,42
Pminus1=1,2,19819,-1,100000000,1000000000,41
856180923.0295Factor=19819,23,24
Pminus1=1,2,19819,-1,100000000,1000000000,23
317104121.5965Factor=19819,21,22
Pminus1=1,2,19819,-1,100000000,1000000000,21
M20,219112923115130.0727Factor=20219,30,31
Pminus1=1,2,20219,-1,10000000,10000000,30
181971120.7953Factor=20219,20,21
Pminus1=1,2,20219,-1,10000000,10000000,20

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