is 2 3625849 - 1
has 1091490 decimal digits
takes 0.381 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26816.438967.6471 %10000002126779201.90868.2376 %18.347570.3122 %
Target2640.981765.6250 %2200020000000.01982.0338 %1.001466.3241 %
Difference+4+15.4572+2.0221 %+978000+210677920+1.8889+6.2038%+17.3461+3.9880 %

Known prime factors (3 factors, 158.9 bits, 0.00438126% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3625849153083344791133.8342111
2111
-121114.598e-101.766e-53.278e-5
36258492170934956384631547.62529936919
3 × 997 × 10009
2008-09-30997100099.580e-60.00020.0003
36258491992694475567697789333772477.39927479005269768512
26 × 11279 × 38067156427
2018-12-0611279380671564278,719.4315.85589.92

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-03-19Lisander ViaeneManual testing100000100000
skipped known factor: 15308334479
skipped known factor: 217093495638463
--0.0151.534%
2022-03-20Lisander ViaeneDesktop10000038206140
skipped known factor: 15308334479
skipped known factor: 217093495638463
--0.3946.837%
2022-03-25JossManual testing1000000147585900
skipped known factor: 15308334479
skipped known factor: 217093495638463
--1.62510.885%
2022-09-09JossManual testing1000000212677920
skipped known factor: 15308334479
skipped known factor: 217093495638463
--2.39311.389%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-30markrManual testing??
47.625
15
4.40363e-6
2022-02-15JossManual testing267268


ECM factoring results:
Total ECM effort:0.392 GHz-days
Estimated T-Level:0.283
DigitsB1CompleteFacMiss
20110000.05794.503%
25500000.00599.533%


ECM Summary

B1B2factorcurvesGHz-days
500005000030.243
50000500000010.148


Lucas-Lehmer results:
No L-L results for M3625849


PRP results:
dateuseridcompidcofactorsres64
2017-11-10Oliver KruseGTX-1
15308334479
217093495638463
46420B606DF2A0DB
2017-12-18kkmrkkblmbrbkc4.xlarge
15308334479
217093495638463
46420B606DF2A0DB
2018-12-07GunnarLuRibenboim
15308334479
217093495638463
199269447556769778933377
46420B606DF2A0DB


CERT results:
No CERT results for M3625849


P-1 factor-bounds graph:
B1 = 1000000, B2 = 212677920 (P-1 stage 2)
B1 = 1000000, B2 = 147585900 (P-1 stage 2)
B1 = 100000, B2 = 38206140 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
268
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=0.28 ~= -16-bit
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00