is 2 73860977 - 1
has 22234370 decimal digits
takes 204.203 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
Actual275103.598864.0000 %635000127000005.18073.6483 %108.779565.3134 %
Target27451.798263.5135 %5000008500000020.46024.1305 %72.258465.0206 %
Difference+1+51.8006+0.4865 %+135000-72300000-15.2794-0.4822 %+36.5212+0.2928 %

Known prime factors (1 factor, 76.4 bits, 0.00010349% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
738609771024058865158951580491112476.439693234036938715
3 × 5 × 193 × 154991 × 1544987
2015-01-311549911544987215.950.92491.2645

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-01-31gcardonaCore_I7-382063500012700000622476.4395.1814.021%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-03-31Jossv4_computers212570.000
2008-07-16George WoltmanManual testing212640.025
2010-06-14wallu2642650.051
2010-06-15ANONYMOUSpeter12652660.101
2010-06-19dulix9matrix2662670.202
2010-06-19sannerud.comJimEmcLap2672680.405
2010-06-22ITSWUV2682690.809
2012-12-14igManual testing2692701.619
2013-08-08greg3llworkpc2702713.238
2014-12-19kdgehmanManual testing27127445.33
2015-01-30RichD0Manual testing27427551.80


ECM factoring results:
No ECM results for M73860977


Lucas-Lehmer results:
No L-L results for M73860977


PRP results:
No PRP results for M73860977


CERT results:
No CERT results for M73860977


P-1 factor-bounds graph:
B1 = 635000, B2 = 12700000 (P-1 stage 2)
B1 = 635000 (P-1 stage 1)
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108
TF factor-bounds graph:
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270
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257
this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00