is 2 381217867 - 1
has 114758013 decimal digits
takes 6,941.342 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
Actual2680.156457.3529%----0.156457.3529%0.0000%
PrimeNet27780.290562.3377%1500000100000000181.29135.8625%261.581764.5456%2.2080%
GPU722811,284.654664.1975%2200000100000000198.76584.3283%1,483.420465.7472%1.5497%
Difference-13-1,284.4983-6.8446%-2200000-100000000-198.7658-4.3283%-1,483.2641-8.3942%-8.3942%

Known prime factors (4 factors, 243.2 bits, 0.00006379% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
38121786710140608744205531649.8491330028
22 × 7 × 47501
2008-02-247475013.708e-70.06850.1276
38121786738425702557440989191961.7375039861177
13 × 23 × 31 × 83 × 6551
2016-05-268365510.00080.01150.0176
381217867204416440309963288012064.14826810973200
24 × 52 × 11 × 6093403
2017-07-312560934030.01878.765716.371
3812178672007934817815250923212167.444263357910480
24 × 3 × 5 × 7 × 181 × 866081
2022-08-051818660810.13501.25032.3268

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
381217867389660015356226891890754323868220734111.586
3812178672072907142066581499690103114024695335113.997
38121786720361681371332071331562967070487351336117.293
3812178677854845333201539629096958500879266611938125.885
38121786777156306064098294102468252722243130099939129.181
381217867410454887832228249669077073281359623712140131.592
38121786779652913270245532638416046637789720573626110120343
807
53175.734
38121786778241191194419332123632731792446078836697816405503
2447
54179.030
38121786741622624246533937866942159478813695832949888420639
47913
55181.441
38121786715772017433089007408833364490334300939904516224399
203772199
59193.329
38121786715993785789574444620331918248236063699802156462241
100713859973185935606047
74243.178
P-1 results:
No P-1 results for M381217867


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-05-26T15:08:59TJAOIManual testing261262*61.737193.43593e-514,2207.03877e-5
2022-07-10T07:43:37LordJuliusManual testing2126461.737190.00114,2200.002
2022-07-10T07:43:38LordJuliusManual testing2126449.849163.70797e-714,2207.59607e-7
2017-07-31T11:27:10TJAOIManual testing264265*64.148200.00914,2200.019
2022-08-05T09:29:54TJAOIManual testing267268*67.444210.05714,2200.117
2022-08-10T19:29:45LordJuliusManual testing2126849.849163.70797e-714,2207.59607e-7
2022-08-10T19:29:45LordJuliusManual testing2126867.444210.13514,2200.276
2022-08-10T19:29:45LordJuliusManual testing2126861.737190.00114,2200.002
2022-08-10T19:29:46LordJuliusManual testing2126864.148200.01914,2200.038


ECM factoring results:
No ECM results for M381217867


Lucas-Lehmer results:
No L-L results for M381217867


PRP results:
No PRP results for M381217867


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
TF factor-bounds graph:
268
265
264
262
240
250
260
270
280
290
2100
Last modified: 2022-08-10T19:29:46+00:00