is 2 388239539 - 1
has 116871747 decimal digits
takes 7,069.195 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
Actual2734.927060.2740%----4.927060.2740%0.0000%
PrimeNet27778.838462.3377%1500000100000000181.29135.8740%260.129664.5499%2.2123%
GPU722811,261.420564.1975%2400000100000000203.75854.3798%1,465.179065.7656%1.5681%
Difference-8-1,256.4935-3.9236%-2400000-100000000-203.7585-4.3798%-1,460.2520-5.4916%-1.5681%

Known prime factors (2 factors, 132.9 bits, 0.00003423% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
388239539482547407655662896812065.38762145577560
23 × 3 × 5 × 11 × 61 × 223 × 3461
2014-05-0422334610.03250.01050.0120
3882395392092001729863888621372167.503269421519412
22 × 67355379853
2022-09-214673553798530.091496,888180,960

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
3882395391009490011556981831512986588088651470829741132.891
P-1 results:
No P-1 results for M388239539


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-05-04T12:52:00tscxw6600-2??65.387200.01414,4740.028
2011-02-28T20:45:00Architects Cubedm1_71264265--0.010--
2022-09-21T07:16:24TJAOIManual testing267268*67.503210.01514,4740.030
2022-09-25T22:01:30LordJuliusManual testing2126967.503210.09114,4740.187
2022-09-25T22:01:30LordJuliusManual testing2126965.387200.03314,4740.067
2022-09-25T22:01:30LordJuliusManual testing269270--0.308--
2022-09-25T22:01:30LordJuliusManual testing270271--0.616--
2022-09-25T22:01:30LordJuliusManual testing271272--1.232--
2022-09-25T22:01:30LordJuliusManual testing272273--2.464--


ECM factoring results:
No ECM results for M388239539


Lucas-Lehmer results:
No L-L results for M388239539


PRP results:
No PRP results for M388239539


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
273
272
271
270
269
268
265
2
250
260
270
280
290
2100
Last modified: 2022-09-25T22:01:30+00:00