is 2 9999971879 - 1
has 3010291492 decimal digits
takes 2,905,663.125 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
Actual2570.000040.3509%----0.000040.3509%
Target2961,604,763.160864.5833%45000000320000000091,381.90944.2828%1,696,145.070266.1002%
Difference-39-1,604,763.1608-24.2325%-45000000-3200000000-91,381.9094-4.2828%-1,696,145.0702-25.7493%

Known prime factors (6 factors, 282.6 bits, 0.00000283% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9999971879199999437591134.2191
1
2018-06-26112.294e-130.00040.0009
99999718794199988189191238.61221
3 × 7
2019-06-20373.845e-120.00140.0026
9999971879367998965147211445.0651840
24 × 5 × 23
2019-06-2016236.473e-100.00690.0137
999997187912429765046159431650.14362149
19 × 3271
2019-06-201932712.961e-80.08270.1404
999997187917822349881628971650.66389112
23 × 3 × 47 × 79
2019-06-2047791.757e-80.02050.0403
9999971879171200765764972748892063.892856006236
22 × 32 × 17 × 163 × 8581
2021-05-2416385810.00020.26190.3679

57 Composite Factors:
P-1 results:
No P-1 results for M9999971879


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-06-2023423534.219115.44923e-166,005,0001.12617e-15
2019-06-2023823938.612121.83094e-13651,9634.32765e-13
2019-06-2024524645.065141.78560e-10651,9634.22049e-10
2019-06-2025025150.143161.46062e-8651,9633.45236e-8
2019-06-2025025150.663162.57127e-9651,9636.07750e-9
2021-05-24mersenneNoobfactoring26326463.892201.68284e-56,005,0003.47785e-5


ECM factoring results:
No ECM results for M9999971879


Lucas-Lehmer results:
No L-L results for M9999971879


PRP results:
No PRP results for M9999971879


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
TF factor-bounds graph:
264
257
251
246
239
235
this exponent TF target: 96
250
260
270
280
290
2100
Last modified: 2023-03-25T13:08:14+00:00