is 2 3881113 - 1
has 1168332 decimal digits
takes 0.484 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2677.656067.1642%1000001303648501.30166.0357%8.957669.1461%1.9819%
PrimeNet2600.039663.3333%170003600000.00653.2450%0.046064.5232%1.1898%
GPU722640.917165.6250%240005000000.00902.2314%0.926166.3921%0.7671%
Difference+3+6.7389+1.5392%+76000+129864850+1.2926+3.8043%+8.0315+2.7540%+1.2148%

Known prime factors (1 factor, 45.5 bits, 0.00117282% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3881113503985188749931445.5186492792
23 × 3 × 97 × 2789
-9727891.650e-64.407e-55.125e-5

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-03-02T18:34:47Jocelyn LaroucheManual testing9000090000-
skipped known factor: 50398518874993
--0.016--0.967%
2022-03-22T03:24:10Jocelyn LaroucheManual testing100000100000-
skipped known factor: 50398518874993
--0.018--1.027%
2022-05-29T08:20:09Jocelyn LaroucheManual testing100000130364850-
skipped known factor: 50398518874993
--1.302--6.036%


Trial Factoring results:
No TF results for M3881113


ECM factoring results:
Total ECM effort:0.536 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.536


Lucas-Lehmer results:
No L-L results for M3881113


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T16:57:29kkmrkkblmbrbkManual testing
50398518874993
0420B2F34F90A1__no
2017-12-26T22:41:51Oliver KruseGTX-7
50398518874993
0420B2F34F90A1__no


P-1 factor-bounds graph:
B1 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2022-05-29T08:20:09+00:00