is 2 4017205301 - 1
has 1209299295 decimal digits
takes 1,007,834.978 GHz-days to do one PRP test
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2710.119054.9296%----0.119054.9296%
Target292249,669.628465.2174%200000006000000000125,796.06394.2377%375,465.692366.6914%
Difference-21-249,669.5094-10.2878%-20000000-6000000000-125,796.0639-4.2377%-375,465.5733-11.7618%

Known prime factors (2 factors, 110.2 bits, 0.00000274% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
401720530160383737696815291652.423751564
22 × 11 × 19 × 29 × 31
2013-10-1229312.148e-70.01060.0215
40172053012464388256078872391857.77430672919
31 × 971 × 1019
2013-10-1297110198.409e-60.35420.7189

1 Composite Factors:
P-1 results:
No P-1 results for M4017205301


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-06-2925225352.423166.54287e-82,046,3300.034
2023-10-27VladimirLapinGTX108023126857.774180.0152,046,3300.034
2023-10-27VladimirLapinGTX108023126852.423160.0152,046,3300.034
2022-12-26slaurpalvi2-rtx268271--0.104--


ECM factoring results:
No ECM results for M4017205301


Lucas-Lehmer results:
No L-L results for M4017205301


PRP results:
No PRP results for M4017205301


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
TF factor-bounds graph:
271
268
253
this exponent TF target: 92
250
260
270
280
290
2100
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Last modified: 2023-10-27T18:34:25+00:00