is 2 3390931 - 1
has 1020772 decimal digits
takes 0.356 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8E0C811AED6FF7ADdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26817.577767.6471%11303101116423001.08917.5733%18.666870.0972%2.4502%
PrimeNet2600.045363.3333%140002800000.00432.8459%0.049664.3768%1.0435%
GPU722641.049765.6250%180003200000.00521.7911%1.054966.2407%0.6157%
Difference+4+16.5281+2.0221%+1112310+111322300+1.0838+5.7821%+17.6119+3.8565%+3.8565%

Known prime factors (1 factor, 65.0 bits, 0.00191556% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3390931357642158484013799292064.9555273509819044
22 × 3 × 75211 × 5843017
2009-06-127521158430171.91400.05930.0905

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-03-14T12:32:22Jocelyn LaroucheManual testing33909337300246---0.080--3.541%
2022-01-09T02:58:35Jocelyn LaroucheManual testing1130310111642300-
skipped known factor: 35764215848401379929
--1.089--7.573%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1997-12-30T00:00:00ANONYMOUSv4_computers21260--0.045--
2009-03-25T20:43:00S485122USB-A260261--0.045--
2022-04-24T18:52:25LordJuliusManual testing21262--0.181--
2022-04-24T18:52:25LordJuliusManual testing262263--0.289--
2022-04-24T18:52:25LordJuliusManual testing263264--0.579--
2022-04-24T18:52:25LordJuliusManual testing26426564.955200.8640.7241.756
2022-04-24T18:52:25LordJuliusManual testing265266--2.204--
2022-04-24T18:52:25LordJuliusManual testing266267--4.407--
2021-07-09T11:40:03Jocelyn LaroucheManual testing267268--8.815--


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)
1998-02-24T00:00:00ANONYMOUSv4_computers8E0C811AED6FF7AD0.356
1999-08-22T00:00:00ANONYMOUSv4_computers8E0C811AED6FF7AD0.356
1999-09-14T00:00:00ANONYMOUSv4_computers8E0C811AED6FF7AD0.356


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-05T22:23:24alpertronlaptop2
35764215848401379929
647526A6EFCEC4__no
2017-11-21T03:04:36Oliver KruseGTX-3
35764215848401379929
647526A6EFCEC4__no


P-1 factor-bounds graph:
B1 = 1130310, B2 = 111642300 (P-1 stage 2)
B1 = 1130310 (P-1 stage 1)
B1 = 339093, B2 = 3730024 (P-1 stage 2)
B1 = 339093 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
250
260
270
280
290
2100
Last modified: 2022-04-24T18:52:25+00:00