is 2 20563661 - 1
has 6190279 decimal digits
takes 14.573 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.445062.6866%----1.445062.6866%0.0000%
PrimeNet2650.354861.5385%9000032000000.26665.0159%0.621463.4677%1.9292%
GPU722695.805763.7681%15000045000000.39773.7730%6.203465.1351%1.3670%
Difference-2-4.3607-1.0815%-150000-4500000-0.3977-3.7730%-4.7584-2.4486%-2.4486%

Known prime factors (1 factor, 34.1 bits, 0.00016577% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
20563661182605309691134.088444
22 × 3 × 37
-4371.220e-105.958e-68.365e-6

P-1 results:
No P-1 results for M20563661


Trial Factoring results:
No TF results for M20563661


ECM factoring results:
No ECM results for M20563661


Lucas-Lehmer results:
No L-L results for M20563661


PRP results:
No PRP results for M20563661


P-1 factor-bounds graph:
100
101
100
101
102
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100