is 2 8188987 - 1
has 2465131 decimal digits
takes 2.138 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2687.278766.1765%----7.278766.1765%0.0000%
PrimeNet2630.194963.4921%360009000000.03153.6191%0.226464.8133%1.3212%
GPU722673.628565.6716%5500013000000.04652.6259%3.675066.5731%0.9014%
Difference+1+3.6501+0.5048%-55000-1300000-0.0465-2.6259%+3.6036-0.3966%-0.9014%

Known prime factors (3 factors, 151.2 bits, 0.00184674% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
818898750607939671032.237309
3 × 103
-31037.454e-113.199e-63.915e-6
8188987879351749047549131756.2875369111888
24 × 72 × 6848357
2015-03-234968483570.00170.14130.2638
818898775190424832035828871962.705459094786889
71 × 5669 × 1140611
2016-09-28566911406110.19410.02560.0439

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
81889874450218026450734633240098712788.524
8188987380523248366133911073140427292994.942
818898766118831587678976632592893421597383136118.993
8188987334613784004014796474960090595094023895467757746151.229
P-1 results:
No P-1 results for M8188987


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-03-23T12:46:00TJAOIManual testing256257*56.287170.0014.5430.001
2022-04-09T01:54:36LordJuliusManual testing2126232.237107.45436e-114.5451.58462e-10
2022-04-09T01:54:36LordJuliusManual testing2126256.287170.0024.5430.004
2016-09-28T14:17:48TJAOIManual testing262263*62.705190.1194.3500.242
2022-09-25T22:56:45JayderManual testing263264--0.240--
2022-09-25T04:32:53LordJuliusManual testing2126432.237107.45436e-114.5451.58462e-10
2022-09-25T04:32:53LordJuliusManual testing2126462.705190.1944.3500.395
2022-09-25T04:32:53LordJuliusManual testing2126456.287170.0024.5430.004
2022-09-25T22:56:45JayderManual testing264265--0.456--
2022-09-25T04:32:53LordJuliusManual testing264265--0.456--
2022-09-25T22:56:45JayderManual testing265266--0.913--
2022-09-25T04:32:53LordJuliusManual testing265266--0.913--
2022-09-25T22:56:45JayderManual testing266267--1.825--
2022-09-25T04:32:53LordJuliusManual testing266267--1.825--
2022-09-22T06:09:29FlaukrotistManual testing267268--3.650--


ECM factoring results:
No ECM results for M8188987


Lucas-Lehmer results:
No L-L results for M8188987


PRP results:
dateuseridcompidcofactorsres64PRP
2018-07-11T20:33:25kkmrkkblmbrbkc5.large
5060793967
87935174904754913
7519042483203582887
6A9D002A12D9F0__no
2020-03-02T09:33:07marssystemssystem03
5060793967
87935174904754913
7519042483203582887
6A9D002A12D9F0AAno


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
TF factor-bounds graph:
268
267
266
265
264
263
262
257
230
240
250
260
270
280
290
2100
Last modified: 2022-09-25T22:56:45+00:00