is 2 8092243 - 1
has 2436008 decimal digits
takes 2.113 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L9479F71F24C2A181double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.671965.6716%9500016150000.06733.0596%3.739266.7220%1.0503%
PrimeNet2630.197263.4921%360009000000.03153.6124%0.228764.8109%1.3188%
GPU722673.671965.6716%5500012000000.04442.5715%3.716366.5544%0.8828%
Difference---+40000+415000+0.0229+0.4881%+0.0229+0.1676%+0.1676%

Known prime factors (1 factor, 69.5 bits, 0.00085834% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
80922438113583770502009685432169.45950131859426997
3 × 977 × 107119 × 159673
2013-06-1310711915967315.1270.04160.0825

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-07-20T00:00:00ANONYMOUSv4_computers40000310000---0.021--1.665%
2012-10-15T05:39:00NesowaEPC950001615000---0.067--3.060%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-08-24T00:00:00ANONYMOUSv4_computers21261--0.038--
1998-11-07T00:00:00ANONYMOUSv4_computers21262--0.076--
1998-11-28T00:00:00ANONYMOUSv4_computers21263--0.197--
2011-07-26T20:49:00Carsten KossendeyManual testing263264--0.243--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-04-05T00:00:00ANONYMOUSv4_computers9479F71F24C2A1812.113
2002-11-02T00:00:00ANONYMOUSv4_computers9479F71F24C2A1812.113


PRP results:
dateuseridcompidcofactorsres64PRP
2018-08-09T13:30:18Oliver KruseGTX-1
811358377050200968543
1071C7F8481E2D__no
2020-01-29T08:42:30marssystemsSYSTEM01
811358377050200968543
1071C7F8481E2D75no


P-1 factor-bounds graph:
B1 = 95000, B2 = 1615000 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 40000, B2 = 310000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
267
264
263
262
261
250
260
270
280
290
2100
Last modified: 2020-01-29T08:42:30+00:00