is 2 60923221 - 1
has 18339717 decimal digits
takes 135.343 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
Actual27331.397664.3836 %----31.397664.3836 %
Target27331.397664.3836 %4000007000000013.50334.1610 %44.901065.8655 %
Difference----400000-70000000-13.5033-4.1610 %-13.5033-1.4820 %

Known prime factors (1 factor, 79.4 bits, 0.00013027% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
609232217781381583962769153216732479.3646386219783063316
22 × 32 × 72 × 31 × 137 × 13537 × 62971
2013-04-2013537629713,434.60.05230.0887

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-04-20BdotBF2479.3641.8520.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-06-01Gordon Spencev4_computers212590.001
2003-09-21Gordon Spencev4_computers212600.001
2022-03-29LordJuliusManual testing260263
2009-04-04Lebedev_NikolaiNikolai-SPb2632640.032
2009-04-07Lebedev_NikolaiNikolai-SPb2642650.061
2009-04-10Lebedev_NikolaiNikolai-SPb2652660.123
2009-04-11RA 59laptop2662670.245
2009-04-13dgriffie792672680.491
2009-07-20steinrarlianli2682690.981
2011-12-03André Jordimacbook-ts2692701.963
2012-09-03RobertNManual testing2702713.925
2013-01-18GrunwalderGIMPManual testing27127323.55


ECM factoring results:
No ECM results for M60923221


Lucas-Lehmer results:
No L-L results for M60923221


PRP results:
No PRP results for M60923221


CERT results:
No CERT results for M60923221


P-1 factor-bounds graph:
103
104
105
103
104
105
TF factor-bounds graph:
273
271
270
269
268
267
266
265
264
263
260
259
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00