is 2 5500141 - 1
has 1655708 decimal digits
takes 0.869 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LF0DBD718CA1582A3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2675.402465.6716 %23500002138500003.176710.0687 %8.579069.1281 %
Target2662.685165.1515 %3400032500000.04792.1131 %2.733065.8879 %
Difference+1+2.7173+0.5201 %+2316000+210600000+3.1287+7.9555%+5.8460+3.2401 %

Known prime factors (1 factor, 66.1 bits, 0.00120146% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5500141781036551624238594392066.0827100150265459
32 × 107 × 7372949393
2011-01-0710773729493934.825491.981171.79

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-07-17TeraTismv4_computers2000020000--0.0050.447%
2010-04-28Squeeky_SquirrelP4_26006000010350006--0.0292.686%
2021-09-11Dylan Delgadolaptop-ryzen737002350000213850000--3.17710.862%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-06-07ANONYMOUSv4_computers212620.056
2009-03-06abcManual testing212630.178


ECM factoring results:
Total ECM effort:0.269 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.269


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-08-01TeraTismv4_computersF0DBD718CA1582A30.869


PRP results:
dateuseridcompidcofactorsres64
2017-12-04kkmrkkblmbrbkc4.xlarge
78103655162423859439
6AC8CF166D36FD35
2018-07-01Dt12Core_i5-8250U
78103655162423859439
6AC8CF166D36FD35


CERT results:
No CERT results for M5500141


P-1 factor-bounds graph:
B1 = 2350000, B2 = 213850000 (P-1 stage 2)
B1 = 2350000 (P-1 stage 1)
B1 = 60000, B2 = 1035000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
263
262
this exponent TF target: 66
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00