is 2 15724733 - 1
has 4733617 decimal digits
takes 8.598 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
Actual2671.889664.1791 %48000026440260011.78149.8546 %13.671067.7091 %
Target2697.592365.2174 %110000140000000.68723.1172 %8.279566.3016 %
Difference-2-5.7027-1.0383 %+370000+250402600+11.0942+6.7374%+5.3915+1.4075 %

Known prime factors (1 factor, 26.5 bits, 0.00016847% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1572473394348399826.4913
3
-135.689e-138.793e-71.614e-6

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-08-11nordisweet16_30.8b14480000480000
skipped known factor: 94348399
--0.3492.140%
2023-08-22nordisweet16_30.8b14480000264402600
skipped known factor: 94348399
--13.118.317%


Trial Factoring results:
57585960616263646566676869
No TF results for M15724733


ECM factoring results:
No ECM results for M15724733


Lucas-Lehmer results:
No L-L results for M15724733


PRP results:
dateuseridcompidcofactorsres64
2023-10-21/r/counting
94348399
0785D3B2C4E4909D


CERT results:
dateuseridcompid
2023-10-21ANONYMOUSflumph


P-1 factor-bounds graph:
B1 = 480000, B2 = 264402600 (P-1 stage 2)
B1 = 480000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 69
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00