is 2 5547931 - 1
has 1670094 decimal digits
takes 0.876 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LB1EA35B6D54F8212double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2675.355965.6716 %10000020000000.04663.0685 %5.402566.7250 %
Target2662.662065.1515 %3400035000000.05102.1568 %2.713065.9031 %
Difference+1+2.6939+0.5201 %+66000-1500000-0.0044+0.9117%+2.6895+0.8219 %

Known prime factors (1 factor, 72.5 bits, 0.00130751% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
554793168652092595231060910812272.540618717974279340
22 × 3 × 5 × 13 × 151 × 239 × 557 × 39461
2010-05-0155739461241.790.00060.0009

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-07-25ANONYMOUSv4_computers2000020000--0.0050.447%
2010-05-01Squeeky_SquirrelP4_26002272.5400.0170.000%
2023-05-12This -Anonymous-Manual testing10000020000006
skipped known factor: 6865209259523106091081
--0.0523.441%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2009-04-23GrunwalderGIMPManual testing2622630.177


ECM factoring results:
Total ECM effort:16.169 GHz-days
Estimated T-Level:4.499
DigitsB1CompleteFacMiss
20110000.90040.666%
25500000.13087.772%
302500000.01698.446%
3510000000.00299.835%


ECM Summary

B1B2factorcurvesGHz-days
500005000000102.695
2500002500000022.695
1000000100000000210.78


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-01ANONYMOUSv4_computersB1EA35B6D54F82120.876
2000-08-24ANONYMOUSv4_computersB1EA35B6D54F82120.876


PRP results:
dateuseridcompidcofactorsres64
2017-12-08treborDesktop
6865209259523106091081
5C9D8DCA9D90785D
2018-03-31kkmrkkblmbrbkc5.xlarge
6865209259523106091081
5C9D8DCA9D90785D


CERT results:
No CERT results for M5547931


P-1 factor-bounds graph:
B1 = 100000, B2 = 2000000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
TF factor-bounds graph:
263
this exponent TF target: 66
TF double-checked to: 67
ECM T-Level=4.5 ~= -2-bit
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00