is 2 5397863 - 1
has 1624919 decimal digits
takes 0.852 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L416AD135B741D0C8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.504865.6716%5000050000000.07323.2067%5.578066.7725%1.1008%
PrimeNet2620.113862.9032%240005500000.01213.1515%0.125964.0723%1.1691%
GPU722662.736065.1515%320006500000.01502.0753%2.751065.8747%0.7232%
Difference+1+2.7688+0.5201%+18000+4350000+0.0582+1.1314%+2.8269+0.8977%+0.8977%

Known prime factors (1 factor, 84.9 bits, 0.00157323% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5397863366160917222594807795407932684.9213391721105394809092
22 × 59 × 347 × 31013 × 1335472277
2015-03-203101313354722771,327,83916.66731.117

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-06-26T00:00:00Texaportv4_computers25000306250---0.009--1.375%
2000-06-29T00:00:00Texaportv4_computers25000306250---0.009--1.375%
2010-10-13T10:31:00Squeeky_SquirrelP4_260060000960000---0.025--2.323%
unknown500005000000---0.073--3.207%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-03-31T00:00:00ANONYMOUSv4_computers21261--0.057--
1998-04-21T00:00:00ANONYMOUSv4_computers21261--0.057--
1999-05-09T00:00:00ANONYMOUSv4_computers21261--0.057--
1999-07-12T00:00:00ANONYMOUSv4_computers21261--0.057--
1998-04-27T00:00:00ANONYMOUSv4_computers21262--0.114--
2009-05-16T20:50:00GrunwalderGIMPManual testing262263--0.182--
2014-12-25T15:33:00VictordeHollanderManual testing263264--0.364--
2014-12-25T15:33:00VictordeHollanderManual testing264265--0.692--


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)
1998-10-29T00:00:00ANONYMOUSv4_computers416AD135B741D0C80.852
1998-11-07T00:00:00ANONYMOUSv4_computers416AD135B741D0C80.852
2000-09-08T00:00:00Texaportv4_computers416AD135B741D0C80.852


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-30T22:19:28kkmrkkblmbrbkc4.xlarge
36616091722259480779540793
65E05E1FE5C095__no
2018-06-21T00:16:03Martin RussellThunderChoad
36616091722259480779540793
65E05E1FE5C095__no


P-1 factor-bounds graph:
B1 = 50000, B2 = 5000000 (P-1 stage 2)
B1 = 60000, B2 = 960000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 25000, B2 = 306250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
103
104
105
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
265
264
263
262
261
250
260
270
280
290
2100
Last modified: 2018-06-21T00:16:03+00:00