is 2 5796487 - 1
has 1744917 decimal digits
takes 1.027 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LE3D8429537C544B2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272164.985068.0556%34000007096632270100.182910.7650%265.167971.4944%
Target2662.547865.1515%3600064000000.09842.2780%2.646265.9454%
Difference+6+162.4372+2.9040%+3364000+7090232270+100.0845+8.4870%+262.5218+5.5490%

Known prime factors (1 factor, 130.7 bits, 0.00225541% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5796487226487088475235684366551994171910465709740130.735195365821121686018071421530119804
22 × 43 × 107 × 809 × 56003 × 350503 × 2170241 × 308018531
2022-10-2321702413080185313.318e+104.83978.0544

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-09-15ANONYMOUSv4_computers25000243750---0.009--0.618%
2011-04-20harleeP4_2600650001088750---0.031--1.301%
2019-12-05storm5510Manual testing72000011520000---0.336--3.553%
2022-10-23Sid & AndyMagic_8_Ball3400000709663227040130.735100.22.055200.410.765%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-11ANONYMOUSv4_computers21262--0.106--
2009-03-25GrunwalderGIMPManual testing262263--0.169--
2014-11-06NesowaManual testing263264--0.339--
2014-11-07monstManual testing264265--0.645--
2015-09-10snme2pm1Manual testing265266--1.289--
2016-07-08Gordon SpenceManual testing266267--2.578--
2018-06-07ramgeisManual testing267268--5.157--
2020-06-26TJAOIManual testing268269--10.31--
2020-12-15-Anonymous-Manual testing269270--20.63--
2020-12-17-Anonymous-Manual testing270271--41.25--
2020-12-18-Anonymous-Manual testing271272--82.51--


ECM factoring results:
Total ECM effort:2.425 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000092.425


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-04ANONYMOUSv4_computersE3D8429537C544B21.027
2000-10-15ANONYMOUSv4_computersE3D8429537C544B21.027


PRP results:
dateuseridcompidcofactorsres64PRP
2022-10-30kutens
2264870884752356843665519941719104657097
0D0B797D54AEF8C0no


P-1 factor-bounds graph:
B1 = 3400000, B2 = 7096632270 (P-1 stage 2)
B1 = 3400000 (P-1 stage 1)
B1 = 720000, B2 = 11520000 (P-1 stage 2)
B1 = 720000 (P-1 stage 1)
B1 = 65000, B2 = 1088750 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 25000, B2 = 243750 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
this exponent TF target: 66
TF double-checked to: 67.9
ECM T-Level=1.73 ~= -11-bit
250
260
270
280
290
2100
2110
2120
2130
2140
Last modified: 2023-07-11T14:45:05+00:00