is 2 4015260961 - 1
has 1208713990 decimal digits
takes 1,007,347.183 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
Actual2710.119154.9296%----0.119154.9296%
Target292249,790.527865.2174%200000009600000000197,146.23064.2375%446,936.758466.6913%
Difference-21-249,790.4088-10.2878%-20000000-9600000000-197,146.2306-4.2375%-446,936.6393-11.7617%

Known prime factors (3 factors, 148.4 bits, 0.00000370% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
401526096122164240504731341.011276
22 × 3 × 23		2012-08-204231.209e-100.00180.0030
401526096110048110249683291649.836125124
22 × 3 × 10427		2019-06-294104273.575e-80.20800.3859
40152609612164444971532689831857.58726952731
13 × 103 × 20129		2019-12-24103201295.590e-60.43440.7450

4 Composite Factors:
P-1 results:
No P-1 results for M4015260961


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-06-2924124241.011134.79446e-11237,1201.02647e-10
2019-06-2924925049.836161.70766e-8237,1203.65603e-8
2019-12-24slaurpalvi2-rtx2126457.587180.001221,5090.002
Missing TF 64 - 65
Missing TF 65 - 66
Missing TF 66 - 67
Missing TF 67 - 68
2022-12-24slaurpalvi2-rtx268271--0.104--


ECM factoring results:
No ECM results for M4015260961


Lucas-Lehmer results:
No L-L results for M4015260961


PRP results:
No PRP results for M4015260961


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
TF factor-bounds graph:
271
264
250
242
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-07-11T14:45:05+00:00