is 2 7479469 - 1
has 2251545 decimal digits
takes 1.631 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L6C0D242DA0269C3Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2673.972765.6716 %350003850000.01711.7009 %3.989866.2555 %
Target2673.972765.6716 %5000055000000.10972.4363 %4.082466.5080 %
Difference----15000-5115000-0.0926-0.7354 %-0.0926-0.2524 %

Known prime factors (1 factor, 73.3 bits, 0.00098040% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7479469118642553422670164035672373.329793121499819507
3 × 193 × 1451 × 2399 × 393517
2012-07-082399393517320.350.00750.0127

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-03-10ANONYMOUSv4_computers35000385000--0.0171.701%
2012-07-08NesowaEPC2373.3290.0560.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-07-29Toddv4_computers212610.021
1998-12-21ANONYMOUSv4_computers212630.172


ECM factoring results:
No ECM results for M7479469


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-27ANONYMOUSv4_computers6C0D242DA0269C3E1.631
2002-07-27Jason Kruppav4_computers6C0D242DA0269C3E1.631


PRP results:
dateuseridcompidcofactorsres64
2018-03-25Hazar Temizelhtemizel
11864255342267016403567
316905F7EFA4FE24
2019-06-18kkmrkkblmbrbkc5.large
11864255342267016403567
316905F7EFA4FE24


CERT results:
No CERT results for M7479469


P-1 factor-bounds graph:
B1 = 35000, B2 = 385000 (P-1 stage 2)
B1 = 35000 (P-1 stage 1)
102
103
104
105
102
103
104
105
106
TF factor-bounds graph:
263
261
this exponent TF target: 67
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00