is 2 418169 - 1
has 125882 decimal digits
takes 0.004 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
Actual26771.057271.6418 %30000001000000000.11657.1474 %71.173773.6687 %
Target2440.000056.8182 %700011000000.000913.1406 %0.000962.4926 %
Difference+23+71.0572+14.8236 %+2993000+98900000+0.1155-5.9933 %+71.1727+11.1761 %

Known prime factors (1 factor, 28.9 bits, 0.00689999% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
418169485076041928.854580
22 × 5 × 29
-5298.552e-118.867e-81.430e-7

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-16alpertronManual testing300000010000000012
skipped known factor: 485076041
---34.656%


Trial Factoring results:
5758596061626364656667
No TF results for M418169


ECM factoring results:
Total ECM effort:10.569 GHz-days
Estimated T-Level:26.435
DigitsB1CompleteFacMiss
201100023.8990.000%
25500003.0284.840%
302500000.28775.049%
3510000000.02297.832%
4030000000.00199.860%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.967
250000250000001447.602


Lucas-Lehmer results:
No L-L results for M418169


PRP results:
dateuseridcompidcofactorsres64
2017-09-23Oliver KruseOllaptop
485076041
FC32A47E14F5200E
2017-11-02kkmrkkblmbrbkc4.xlarge
485076041
FC32A47E14F5200E
2020-04-18Oliver KruseAddPrpType5
485076041
DA906E3EAB31F635


CERT results:
No CERT results for M418169


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
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108
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=26.44 ~= 71-bit
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JSON version of this page
Last modified: 2024-02-09T03:30:02+00:00