is 2 2915413 - 1
has 877627 decimal digits
takes 0.225 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF73C47E3637D7E83double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26710.192067.1642%20482048000.00150.3039%10.193567.2640%0.0998%
PrimeNet2590.026362.7119%130002600000.00303.0672%0.029363.8556%1.1437%
GPU722630.547465.0794%160003000000.00351.9109%0.551065.7467%0.6673%
Difference+4+9.6446+2.0848%-13952-95200-0.0021-1.6070%+9.6425+1.5173%+1.5173%

Known prime factors (1 factor, 59.0 bits, 0.00202522% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
29154135940992379813401211859.043101889378620
22 × 5 × 17 × 283 × 1058921
-28310589210.02780.00650.0121

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-02T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.304%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1997-11-29T00:00:00ANONYMOUSv4_computers21259--0.026--
1998-06-14T00:00:00ANONYMOUSv4_computers21259--0.026--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.315 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.315 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.315


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-11-29T00:00:00ANONYMOUSv4_computersF73C47E3637D7E830.225
1998-06-14T00:00:00ANONYMOUSv4_computersF73C47E3637D7E830.225
1999-07-27T00:00:00ANONYMOUSv4_computersF73C47E3637D7E830.225


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-25T01:09:24Oliver KruseGTX-3
594099237981340121
A9FBD74EE6B73E__no
2017-12-09T06:11:59kkmrkkblmbrbkold
594099237981340121
A9FBD74EE6B73E__no


P-1 factor-bounds graph:
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
101
102
103
104
101
102
103
104
105
106
107
TF factor-bounds graph:
267
259
250
260
270
280
290
2100
Last modified: 2018-05-29T06:04:05+00:00