is 2 7516361 - 1
has 2262651 decimal digits
takes 1.639 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L0852116C87B081FFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2673.953265.6716 %400005600000.02161.9507 %3.974866.3413 %
Target2673.953265.6716 %5000055000000.10972.4382 %4.062966.5086 %
Difference----10000-4940000-0.0881-0.4875 %-0.0881-0.1674 %

Known prime factors (1 factor, 69.2 bits, 0.00092030% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
75163616656307514170588704892169.17344278790721804
22 × 32 × 29 × 139 × 167 × 1827107
2012-05-03167182710730.0140.03150.0588

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-02-03ANONYMOUSv4_computers40000560000--0.0221.951%
2012-05-03James Heinrichi7-9202169.1730.0970.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-08-02ANONYMOUSv4_computers212610.020
1998-08-09ANONYMOUSv4_computers212630.171


ECM factoring results:
No ECM results for M7516361


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-03-22Michael Hanschov4_computers0852116C87B081FF1.639
2002-02-17ANONYMOUSv4_computers0852116C87B081FF1.639


PRP results:
dateuseridcompidcofactorsres64
2018-03-29axnskylake
665630751417058870489
525B9C7DD1C1E624
2019-06-27kkmrkkblmbrbkc5.large
665630751417058870489
525B9C7DD1C1E624


CERT results:
No CERT results for M7516361


P-1 factor-bounds graph:
B1 = 40000, B2 = 560000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
TF factor-bounds graph:
263
261
this exponent TF target: 67
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00