is 2 1846231 - 1
has 555771 decimal digits
takes 0.100 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
Actual26716.094468.6567 %500000150000000.10155.0740 %16.195870.2471 %
Target2610.166465.5738 %90007500000.00391.6303 %0.170366.1350 %
Difference+6+15.9280+3.0829 %+491000+14250000+0.0976+3.4437%+16.0256+4.1121 %

Known prime factors (3 factors, 162.0 bits, 0.00877290% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
184623124370249211031.182660
22 × 3 × 5 × 11
-5111.771e-104.190e-78.005e-7
18462311831214089367591547.38049593309
3 × 149 × 110947
2008-08-261491109471.505e-50.00050.0009
1846231128129833532630306269675032683.4063470037972838455921
3 × 7 × 389 × 17033 × 38333 × 650581
2015-08-27383336505811,162,3260.00560.0061

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-08-27alpertronManual testing500000150000001222683.4060.1018.873%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-08-26ANONYMOUSManual testing??
47.380
15
6.58845e-6


ECM factoring results:
Total ECM effort:39.098 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100015.1260.000%
25500001.68218.601%
302500000.14186.871%
3510000000.01099.049%


ECM Summary

B1B2factorcurvesGHz-days
500005000000292.005
50000660000022017.15
50000675000070.551
84000840000010.116
250000400000004519.28


Lucas-Lehmer results:
No L-L results for M1846231


PRP results:
dateuseridcompidcofactorsres64
2017-10-04Oliver KruseGTX-2
2437024921
183121408936759
12812983353263030626967503
BDCE8311960350A2
2017-10-05Oliver KruseManual testing
2437024921
183121408936759
12812983353263030626967503
BDCE8311960350A2
2017-11-11kkmrkkblmbrbkc4.xlarge
2437024921
183121408936759
12812983353263030626967503
BDCE8311960350A2


CERT results:
No CERT results for M1846231


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
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105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
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290
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Last modified: 2024-03-13T02:15:48+00:00