is 2 6077947 - 1
has 1829645 decimal digits
takes 1.077 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8152732FDBD1E48Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.888865.6716 %20000700000.00580.7863 %4.894665.9416 %
Target2662.429865.1515 %4000045000000.07272.4223 %2.502665.9957 %
Difference+1+2.4590+0.5201 %-20000-4430000-0.0669-1.6360 %+2.3921-0.0541 %

Known prime factors (1 factor, 65.8 bits, 0.00108248% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6077947639149188189563105132065.7935257936505448
23 × 32 × 11 × 97 × 2131 × 32117
2011-04-062131321172.04340.00100.0011

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-11-15ANONYMOUSv4_computers2000070000--0.0060.918%
2011-04-06markrtiny2065.7930.0280.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-12-06ANONYMOUSv4_computers212620.051


ECM factoring results:
No ECM results for M6077947


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-13ANONYMOUSv4_computers8152732FDBD1E48D1.077
2001-02-11ANONYMOUSv4_computers8152732FDBD1E48D1.077


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
63914918818956310513
AADA4C8EA38425F8
2018-09-17rucio
63914918818956310513
AADA4C8EA38425F8


CERT results:
No CERT results for M6077947


P-1 factor-bounds graph:
B1 = 20000, B2 = 70000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
102
103
104
105
102
103
104
105
TF factor-bounds graph:
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