is 2 8189309 - 1
has 2465228 decimal digits
takes 2.138 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L689C9FA586707C5Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2687.278466.1765%----7.278466.1765%0.0000%
PrimeNet2630.194963.4921%360009000000.03153.6191%0.226364.8133%1.3212%
GPU722673.628465.6716%5500013000000.04652.6259%3.674966.5731%0.9014%
Difference+1+3.6500+0.5048%-55000-1300000-0.0465-2.6259%+3.6035-0.3966%-0.9014%

Known prime factors (1 factor, 66.2 bits, 0.00080818% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8189309838619435562966016072066.1855120208771967
599 × 26107 × 327419
2009-06-18261073274193.56000.01610.0201

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-18T17:42:00Carsten Kossendeyleela2066.185-4.277-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-28T00:00:00ANONYMOUSv4_computers21262--0.075--
1998-12-13T00:00:00ANONYMOUSv4_computers21263--0.195--
2022-09-25T22:56:45JayderManual testing263264--0.240--
2022-09-25T04:32:53LordJuliusManual testing21264--0.435--
2022-09-25T22:56:45JayderManual testing264265--0.456--
2022-09-25T04:32:53LordJuliusManual testing264265--0.456--
2022-09-25T22:56:45JayderManual testing265266--0.912--
2022-09-25T06:23:19LordJuliusManual testing265266--0.912--
2022-09-25T22:56:45JayderManual testing26626766.185201.7574.3513.574
2022-09-25T06:23:19LordJuliusManual testing26626766.185201.7574.3513.574
2022-09-22T06:09:29FlaukrotistManual testing267268--3.650--


ECM factoring results:
No ECM results for M8189309


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-09-22T00:00:00ANONYMOUSv4_computers689C9FA586707C5E2.138
2003-02-27T00:00:00ANONYMOUSv4_computers689C9FA586707C5E2.138


PRP results:
dateuseridcompidcofactorsres64PRP
2018-09-12T01:45:41Oliver KruseGTX-5
83861943556296601607
D8C87A8BFC7AB9__no
2020-03-02T11:40:31marssystemssystem11
83861943556296601607
D8C87A8BFC7AB910no


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
268
267
266
265
264
263
262
250
260
270
280
290
2100
Last modified: 2022-09-25T22:56:45+00:00