is 2 4934387 - 1
has 1485399 decimal digits
takes 0.684 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
Actual2676.021865.6716 %2560001055220601.20417.1036 %7.226068.1102 %
Target2651.478564.6154 %3400035000000.04482.4106 %1.523365.4684 %
Difference+2+4.5433+1.0563 %+222000+102022060+1.1594+4.6929%+5.7026+2.6418 %

Known prime factors (1 factor, 46.5 bits, 0.00094202% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4934387983460534377991446.4839965377
9965377
-199653771.915e-60.10910.2038

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-09-23USAFSS6917th_Scty_Sq256000105522060
skipped known factor: 98346053437799
--1.2048.545%


Trial Factoring results:
5758596061626364656667
No TF results for M4934387


ECM factoring results:
Total ECM effort:0.630 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.630


Lucas-Lehmer results:
No L-L results for M4934387


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
98346053437799
EEF14DD3DE7BEC16
2018-04-16Oliver KruseGTX-1
98346053437799
EEF14DD3DE7BEC16


CERT results:
No CERT results for M4934387


P-1 factor-bounds graph:
B1 = 256000, B2 = 105522060 (P-1 stage 2)
B1 = 256000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
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Last modified: 2024-03-13T02:15:48+00:00