is 2 147437027 - 1
has 44382968 decimal digits
takes 845.459 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27312.974061.6438 %----12.974061.6438 %
Target277207.601663.6364 %90000017000000084.08834.1387 %291.689965.1413 %
Difference-4-194.6276-1.9925 %-900000-170000000-84.0883-4.1387 %-278.7159-3.4975 %

Known prime factors (1 factor, 72.3 bits, 0.00004902% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14743702756875630409897109532072272.26819288109495689
17 × 307 × 409 × 9036059		2020-04-3040990360598.15604.09677.6455

P-1 results:
No P-1 results for M147437027


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-03-30Rob_Deetwopc2642650.025
2013-01-01Charles A. Morrischandra2652660.051
2015-03-08BJBOdyssey_V2662670.101
2016-03-18DerekManual testing2672680.203
2016-12-05AK76Manual testing2682701.216
2017-06-04StyMManual testing2702724.866
2020-04-30ViliamFManual testing272273
72.268
22
1.741


ECM factoring results:
No ECM results for M147437027


Lucas-Lehmer results:
No L-L results for M147437027


PRP results:
No PRP results for M147437027


CERT results:
No CERT results for M147437027


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
TF factor-bounds graph:
273
272
270
268
267
266
265
this exponent TF target: 77
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-04-17T15:19:26+00:00