is 2 4000631857 - 1
has 1204310191 decimal digits
takes 1,003,677.039 GHz-days to do one PRP test
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
Actual2720.239055.5556 %----0.239055.5556 %
Target292250,703.936465.2174 %200000006000000000125,796.06394.2360 %376,500.000366.6908 %
Difference-20-250,703.6974-9.6618 %-20000000-6000000000-125,796.0639-4.2360 %-376,499.7613-11.1352 %

Known prime factors (1 factor, 71.2 bits, 0.00000178% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
400063185727611428944193593685212271.226345088350180
22 × 32 × 5 × 7 × 457 × 499 × 1201
2020-07-0849912010.11950.19540.3694

P-1 results:
No P-1 results for M4000631857


Trial Factoring results:
575859606162636465666768697071727374757677787980818283848586878889909192
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2023-12-10ramgeisr4mg31s212680.015
2020-09-04slaurnocebo-16502642680.014
2024-03-01frmkyt42682710.105
2020-07-08ViliamF3GPU271272
71.226
22
0.120


ECM factoring results:
No ECM results for M4000631857


Lucas-Lehmer results:
No L-L results for M4000631857


PRP results:
No PRP results for M4000631857


CERT results:
No CERT results for M4000631857


P-1 factor-bounds graph:
101
102
103
101
102
103
104
TF factor-bounds graph:
272
271
268
this exponent TF target: 92
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00