is 2 80947949 - 1
has 24367761 decimal digits
takes 252.597 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27594.528864.0000 %680000137700006.30373.7826 %100.832565.3617 %
Target27594.528864.0000 %5000008500000023.09323.7884 %117.621965.3638 %
Difference---+180000-71230000-16.7894-0.0058 %-16.7894-0.0021 %

Known prime factors (1 factor, 82.0 bits, 0.00010130% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8094794948497432583210012002932072582.00429955936612557047
31 × 107 × 337 × 22277 × 1202959
2017-03-2522277120295923,4330.39190.5539

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-03-25nranksNR-GM680000137700001222582.0046.3043.783%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-11Architects Cubedm1_102642650.046
2011-02-05steinrarManual testing2652660.092
2011-02-14Pi_RhoManual testing2662670.185
2011-02-18Pi_RhoManual testing2672680.369
2011-04-14ANONYMOUSv4_computers2672680.369
2011-02-24Perederiy Serg N.k118it2682690.739
2011-03-01Perederiy Serg N.k118it2692701.477
2013-06-18Juergen KampmeierManual testing27027320.68
2016-10-31Judge HaleManual testing27327423.63
2016-11-10electron1897Manual testing27427547.27


ECM factoring results:
No ECM results for M80947949


Lucas-Lehmer results:
No L-L results for M80947949


PRP results:
No PRP results for M80947949


CERT results:
No CERT results for M80947949


P-1 factor-bounds graph:
B1 = 680000, B2 = 13770000 (P-1 stage 2)
B1 = 680000 (P-1 stage 1)
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108
TF factor-bounds graph:
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this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00