is 2 5560169 - 1
has 1673778 decimal digits
takes 0.878 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7FC31E6AA8F20C02double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.344165.6716%5000050000000.07323.2214%5.417366.7775%1.1059%
PrimeNet2620.110562.9032%240005500000.01213.1670%0.122664.0781%1.1749%
GPU722662.656165.1515%340007000000.01612.1576%2.672265.9034%0.7519%
Difference+1+2.6880+0.5201%+16000+4300000+0.0571+1.0639%+2.7451+0.8741%+0.8741%

Known prime factors (1 factor, 67.2 bits, 0.00120927% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
55601691739477959993061614872167.23715642311951247
3 × 97 × 53753649317
2015-07-0197537536493178.7267670.601,252.5

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-08-01T00:00:00ANONYMOUSv4_computers2000020000---0.005--0.377%
2001-05-27T00:00:00ANONYMOUSv4_computers25000225000---0.008--1.257%
2010-11-28T12:37:00Squeeky_SquirrelP4_2600650001023750---0.027--2.411%
unknown500005000000---0.073--3.221%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-10T00:00:00ANONYMOUSv4_computers21262--0.110--
2009-04-23T19:21:00GrunwalderGIMPManual testing262263--0.177--
2014-12-16T20:34:00NesowaManual testing263264--0.353--
2014-12-17T02:12:00monstManual testing264265--0.672--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.720 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.720 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000030.720


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-22T00:00:00ANONYMOUSv4_computers482E1EDB71EBEC__0.878
2000-08-31T00:00:00ANONYMOUSv4_computers7FC31E6AA8F20C020.878
2001-07-17T00:00:00ANONYMOUSv4_computers7FC31E6AA8F20C020.878


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:20:23kkmrkkblmbrbkManual testing
173947795999306161487
9D1305B6848ACA__no
2018-07-06T19:47:37ATHec2-PRPCFDC
173947795999306161487
9D1305B6848ACA__no


P-1 factor-bounds graph:
B1 = 50000, B2 = 5000000 (P-1 stage 2)
B1 = 65000, B2 = 1023750 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 25000, B2 = 225000 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
100
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105
100
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102
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1010
1011
TF factor-bounds graph:
267
265
264
263
262
250
260
270
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290
2100
Last modified: 2018-07-06T19:47:37+00:00