is 2 9462619 - 1
has 2848533 decimal digits
takes 2.615 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4C0A7AC75C055FB7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.140164.1791%11500021562500.09073.4519%3.230865.4156%1.2365%
PrimeNet2640.376162.5000%4000011000000.03923.4985%0.415363.8119%1.3119%
GPU722686.299064.7059%6000014000000.05332.4624%6.352365.5750%0.8691%
Difference-1-3.1588-0.5268%+55000+756250+0.0374+0.9895%-3.1215-0.1594%-0.1594%

Known prime factors (1 factor, 74.4 bits, 0.00078590% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9462619243577595990723571037212374.3671287051692510940
22 × 3 × 5 × 21450861541849
2014-09-07521450861541849651.11468,374874,791

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-05-19T00:00:00Lawrence V. Castiglione IIIv4_computers50000650000---0.033--2.215%
2008-04-24T00:00:00Lawrence V. Castiglione IIIv4_computers50000650000---0.033--2.215%
2012-12-22T19:12:00NesowaOutback1150002156250---0.091--3.452%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-12-06T00:00:00ANONYMOUSv4_computers21255--0.001--
1999-07-12T00:00:00ANONYMOUSv4_computers21264--0.376--
2013-09-04T08:10:00NesowaManual testing264265--0.395--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.420 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.420 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.420


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-03-05T00:00:00curtiscv4_computers4C0A7AC75C055FB72.615
2003-08-08T00:00:00Lawrence V. Castiglione IIIv4_computers4C0A7AC75C055FB72.615
2008-04-24T00:00:00Lawrence V. Castiglione IIIv4_computers4C0A7AC75C055FB72.615


PRP results:
dateuseridcompidcofactorsres64PRP
2019-09-11T14:48:48mnd975202b
24357759599072357103721
353074FF2BDE32__no
2020-12-01T04:27:44kutenssol
24357759599072357103721
353074FF2BDE32AAno


P-1 factor-bounds graph:
B1 = 115000, B2 = 2156250 (P-1 stage 2)
B1 = 115000 (P-1 stage 1)
B1 = 50000, B2 = 650000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-12-01T04:27:44+00:00