is 2 5661911 - 1
has 1704406 decimal digits
takes 0.894 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L02B383ED27A94CBFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.248065.6716%6500010400000.02702.4274%5.275166.5049%0.8333%
PrimeNet2620.108562.9032%240005500000.01213.1765%0.120664.0816%1.1784%
GPU722662.608465.1515%360007000000.01652.1940%2.624965.9161%0.7646%
Difference+1+2.6397+0.5201%+29000+340000+0.0105+0.2334%+2.6502+0.5888%+0.5888%

Known prime factors (1 factor, 67.0 bits, 0.00118356% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
56619111487923692262359184972167.01213139765816368
24 × 269 × 467 × 6537301
2015-09-1846765373015.55430.08170.1523

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-08-24T00:00:00ANONYMOUSv4_computers30000292500---0.010--1.436%
2001-06-03T00:00:00ANONYMOUSv4_computers2000065000---0.005--0.750%
2011-05-22T03:24:00harleeP4_2600650001040000---0.027--2.427%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-12-27T00:00:00ANONYMOUSv4_computers21262--0.109--
2009-04-10T04:58:00GrunwalderGIMPManual testing262263--0.173--
2014-11-22T22:25:00NesowaManual testing263264--0.347--
2014-11-23T20:01:00monstManual testing264265--0.660--
2015-08-27T21:38:00snme2pm1Manual testing265266--1.320--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.441 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:1.441 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.720
50000500000030.720


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00ANONYMOUSv4_computers9E857AD00D06D6__0.894
2000-05-10T00:00:00ANONYMOUSv4_computers02B383ED27A94CBF0.894
2001-07-17T00:00:00ANONYMOUSv4_computers02B383ED27A94CBF0.894


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:36:14kkmrkkblmbrbkManual testing
148792369226235918497
5EE046924A4EE5__no
2018-08-15T01:26:56ATHec2-PRPCFDC
148792369226235918497
5EE046924A4EE5__no


P-1 factor-bounds graph:
B1 = 65000, B2 = 1040000 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 30000, B2 = 292500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 20000, B2 = 65000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
TF factor-bounds graph:
267
266
265
264
263
262
250
260
270
280
290
2100
Last modified: 2018-08-15T01:26:56+00:00