is 2 125737 - 1
has 37851 decimal digits
takes 0.000 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
Actual267236.318074.6269 %10000000020000000000.770511.9221 %237.088577.6519 %
Target2440.000061.3636 %22001800000.00006.1432 %0.000163.7371 %
Difference+23+236.3180+13.2632 %+99997800+1999820000+0.7705+5.7789%+237.0885+13.9147 %

Known prime factors (2 factors, 84.5 bits, 0.06716513% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1257375783903722.46423
23
-1234.466e-128.324e-98.324e-9
12573745728801961958719771961.98818184306115924
22 × 13 × 41 × 59 × 144563123
2010-04-09591445631234.37000.02980.0557

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-03-15kkmrkkblmbrbkManual testing100000000200000000012
skipped known factor: 5783903
skipped known factor: 4572880196195871977
---41.201%


Trial Factoring results:
5758596061626364656667
No TF results for M125737


ECM factoring results:
Total ECM effort:11.623 GHz-days
Estimated T-Level:30.587
DigitsB1CompleteFacMiss
201100064.3720.000%
255000010.3650.003%
302500001.23429.124%
3510000000.11788.915%
4030000000.00999.064%


ECM Summary

B1B2factorcurvesGHz-days
10.198
500005000000400.099
250000250000005727.824
1000000100000000653.502


Lucas-Lehmer results:
No L-L results for M125737


PRP results:
dateuseridcompidcofactorsres64
2017-09-21Oliver KruseOliver-PC
5783903
4572880196195871977
8C64D4EF025DD630
2017-09-21Oliver KruseManual testing
5783903
4572880196195871977
8C64D4EF025DD630
2017-10-13kkmrkkblmbrbkManual testing
5783903
4572880196195871977
8C64D4EF025DD630
2020-04-17Oliver KruseAddPrpType5
5783903
4572880196195871977
355C493A7CCE930E
2024-02-03Wentao HuangManual testing
5783903
4572880196195871977
355C493A7CCE930E


CERT results:
dateuseridcompid
2024-02-03ChuckMaingear_i7-7800


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=30.59 ~= 85-bit
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290
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Last modified: 2024-03-13T02:15:48+00:00