is 2 397607123 - 1
has 119691671 decimal digits
takes 7,572.943 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
Actual2749.622260.8108%----9.622260.8108%0.0000%
PrimeNet27776.980962.3377%1500000100000000189.63445.8890%266.615464.5556%2.2179%
GPU722811,231.701564.1975%2400000100000000213.13574.3912%1,444.837265.7697%1.5722%
Difference-7-1,222.0793-3.3867%-2400000-100000000-213.1357-4.3912%-1,435.2150-4.9589%-1.5722%

Known prime factors:
No known factors for M397607123

P-1 results:
No P-1 results for M397607123


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-08T04:20:00Architects Cubedm1_11264265--0.009--
2014-06-09T15:26:00Richard8F02265266--0.019--
2016-04-16T17:55:29DerekManual testing266267--0.038--
2017-02-16T12:14:05Dave Bellmars267268--0.075--
2018-04-27T18:46:29mikrManual testing268270--0.451--
2020-05-25T14:12:03SRBaseManual testing270271--0.601--
2020-08-04T08:08:45SRBaseManual testing271272--1.203--
2021-01-31T17:58:43SRBaseManual testing272273--2.406--
2022-05-15T23:13:54SRBaseManual testing273274--4.811--


ECM factoring results:
No ECM results for M397607123


Lucas-Lehmer results:
No L-L results for M397607123


PRP results:
No PRP results for M397607123


TF factor-bounds graph:
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Last modified: 2022-05-15T23:13:54+00:00