is 2 77289613 - 1
has 23266492 decimal digits
takes 217.914 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
Actual27599.003164.0000 %6750006750002.75951.5670 %101.762664.5641 %
Target27449.500463.5135 %5000009000000021.97904.1984 %71.479465.0454 %
Difference+1+49.5027+0.4865 %+175000-89325000-19.2194-2.6314 %+30.2832-0.4813 %

Known prime factors (1 factor, 75.1 bits, 0.00009718% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
77289613406877968084718321408172375.107263216460978216
23 × 33 × 29 × 149 × 317 × 389 × 2287
2015-09-063892287197.490.00200.0032

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-09-06FilenSirrah467500067500012375.1072.7601.758%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-08-17ANONYMOUSv4_computers212531.55000e-5
2003-12-02ANONYMOUSv4_computers212610.002
2022-06-27LordJuliusManual testing261264
2010-12-01UgmMac_Final_Cut2642650.048
2010-12-06Helmut Zulussrv-enter2652660.097
2010-12-08Ken L.Ken-p6t2662670.193
2010-12-16greg_plonkanew_laptop2672680.387
2010-12-16sannerud.comJimEmcLap2682690.773
2010-12-20sannerud.comJimEmcLap2692701.547
2014-02-21dufrenbkStacyLaptop2702713.094
2015-06-08ChuckManual testing2712726.188
2015-08-261997rj7Manual testing27227437.13
2015-09-01RichD0Manual testing27427549.50


ECM factoring results:
No ECM results for M77289613


Lucas-Lehmer results:
No L-L results for M77289613


PRP results:
No PRP results for M77289613


CERT results:
No CERT results for M77289613


P-1 factor-bounds graph:
B1 = 675000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
TF factor-bounds graph:
275
274
272
271
270
269
268
267
266
265
264
261
253
this exponent TF target: 74
TF double-checked to: 67
250
260
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280
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Last modified: 2024-03-13T02:15:48+00:00