Mersenne numbers P-1 factors that should have already been found but were missed:
4 exponents (3,757 factors) like this known
List by user
Exponent range: M to M
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ExponentFactor BitsMissed ByAssignment
M353201278951586741084265761.27472002-12-09 00:00:00
Criswell
Factor=353201,61,62
Pminus1=1,2,353201,-1,1061,93383,61
M353429309563653051884151.45922002-12-09 00:00:00
Criswell
Factor=353429,51,52
Pminus1=1,2,353429,-1,19,49891,51
M3802037023796091007587955.96312002-12-09 00:00:00
Criswell
Factor=380203,55,56
Pminus1=1,2,380203,-1,593,47533,55
M433861953842408103306353.08272002-12-09 00:00:00
Criswell
Factor=433861,53,54
Pminus1=1,2,433861,-1,4751,62533,53

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