is 2 3881089841 - 1
has 1168324459 decimal digits
takes 973,686.382 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
Actual281126.184560.4938%----126.184560.4938%
Target292258,425.905165.2174%190000008800000000180,946.68204.1467%439,372.587166.6597%
Difference-11-258,299.7206-4.7236%-19000000-8800000000-180,946.6820-4.1467%-439,246.4026-6.1659%

Known prime factors (7 factors, 343.3 bits, 0.00000884% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
38810898411241948749131236.85416
24		2012-08-2016162.449e-120.00580.0118
38810898412794384685531238.02436
22 × 32		2014-08-28991.024e-110.00330.0067
388108984141915770282811341.931540
22 × 33 × 5		2014-08-2827279.705e-110.00980.0200
38810898412530781063519291547.84732604
22 × 3 × 11 × 13 × 19		2014-08-2813197.867e-90.00480.0096
38810898415849578608355211549.05575360
25 × 3 × 5 × 157		2014-08-28321572.760e-80.01410.0237
388108984147828846936313020091962.053616178044
22 × 71 × 2169641		2014-08-287121696410.000343.02680.314
38810898412112808062666649078632167.51827219262491
33 × 37 × 41 × 664549		2014-08-28416645490.014113.18524.600

120 Composite Factors:
P-1 results:
No P-1 results for M3881089841


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2021-05-03slaurnocebo-165026426867.518210.0141,978,7200.016
2021-09-22Seth_Tr108026726867.518210.0081,978,7200.016
2021-09-22Seth_Tr108026426967.518210.0301,978,7200.016
Missing TF 69 - 70
Missing TF 70 - 71
Missing TF 71 - 72
Missing TF 72 - 73
Missing TF 73 - 74
Missing TF 74 - 75
2014-10-23275276--1.972--
2022-01-18ramgeisr4mg31s275276--1.972--
2014-10-23276277--3.943--
2022-01-19ramgeisr4mg31s276277--3.943--
2022-01-21ramgeisr4mg31s277278--7.887--
2022-01-29ramgeisr4mg31s27827936.8541215.771,978,72032.32
2022-01-29ramgeisr4mg31s27827941.9311315.771,978,72064.63
2022-02-09ramgeisr4mg31s27928038.0241231.551,978,72064.63
2022-02-09ramgeisr4mg31s27928041.9311331.551,978,72064.63
2022-04-18ramgeisr4mg31s280281--63.09--


ECM factoring results:
No ECM results for M3881089841


Lucas-Lehmer results:
No L-L results for M3881089841


PRP results:
No PRP results for M3881089841


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
TF factor-bounds graph:
281
280
279
278
277
276
269
268
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-07-11T14:45:05+00:00