is 2 21690611 - 1
has 6529525 decimal digits
takes 15.372 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
Actual2671.369962.6866 %----1.369962.6866 %
Target2695.504163.7681 %160000225000001.41513.8393 %6.919265.1592 %
Difference-2-4.1342-1.0815 %-160000-22500000-1.4151-3.8393 %-5.5493-2.4726 %

Known prime factors (3 factors, 122.5 bits, 0.00056465% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2169061143381223825.3711
1
2011-06-23112.061e-131.028e-62.091e-6
216906112162504028294711547.6204984885
5 × 967 × 1031
2008-10-0196710311.711e-60.00100.0020
216906117884134954572071549.48618174073
199 × 271 × 337
2011-06-232713376.161e-60.00030.0006

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-23AxonManual testing2374.8570.9410.000%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-10-01markrManual testing??
47.620
15
4.65700e-7


ECM factoring results:
No ECM results for M21690611


Lucas-Lehmer results:
No L-L results for M21690611


PRP results:
No PRP results for M21690611


CERT results:
No CERT results for M21690611


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
TF factor-bounds graph:
this exponent TF target: 69
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00