is 2 60986573 - 1
has 18358788 decimal digits
takes 143.262 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
Actual27331.365064.3836 %----31.365064.3836 %
Target27462.732964.8649 %4000006500000013.35073.7140 %76.083666.1698 %
Difference-1-31.3679-0.4813 %-400000-65000000-13.3507-3.7140 %-44.7186-1.7862 %

Known prime factors (1 factor, 74.2 bits, 0.00012174% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
60986573224000001559042417496472374.246183646982065251
3 × 472 × 112111 × 247183
2013-02-1411211124718391.1270.40690.7772

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-02-14kdgehmanManual testing2374.2462.9320.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-06-01Gordon Spencev4_computers212590.001
2003-09-29Gordon Spencev4_computers212600.001
2022-03-29LordJuliusManual testing260263
2009-04-03arnaudSRV-2202632640.032
2009-07-06Sturle Sundegaudi.ifi2642650.061
2009-07-11BranMuffinPicard2652660.123
2009-07-12SDCoctopusuk12662670.245
2009-07-17YanktonBarada2672680.490
2009-07-19scotty2419022682690.980
2011-10-28ANONYMOUSManual testing2692701.960
2011-10-28Tom DuellManual testing2692701.960
2013-01-01Oscar ÖstlinManual testing2702713.921
2013-01-10Jerry HallettManual testing27127323.53


ECM factoring results:
No ECM results for M60986573


Lucas-Lehmer results:
No L-L results for M60986573


PRP results:
No PRP results for M60986573


CERT results:
No CERT results for M60986573


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
273
271
270
269
268
267
266
265
264
263
260
259
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00