is 2 147431153 - 1
has 44381200 decimal digits
takes 845.426 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
Actual27312.974561.6438 %----12.974561.6438 %
Target277207.609963.6364 %90000017000000084.08834.1386 %291.698265.1413 %
Difference-4-194.6354-1.9925 %-900000-170000000-84.0883-4.1386 %-278.7237-3.4975 %

Known prime factors (1 factor, 72.1 bits, 0.00004889% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14743115349777422295161369513372272.07616881582108756
22 × 3 × 1406798509063		2020-04-30414067985090639.4862637,3021,190,302

P-1 results:
No P-1 results for M147431153


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-02sannerud.comJim20102642650.025
2013-01-01sasaki3home2652660.051
2015-03-08KayJongsmaHenk2662670.101
2016-03-18DerekManual testing2672680.203
2016-12-04AK76Manual testing2682701.216
2016-12-06n9Mtq4Manual testing2702711.622
2016-12-07vebisManual testing2712723.244
2020-04-30ViliamFManual testing272273
72.076
22
0.493


ECM factoring results:
No ECM results for M147431153


Lucas-Lehmer results:
No L-L results for M147431153


PRP results:
No PRP results for M147431153


CERT results:
No CERT results for M147431153


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
273
272
271
270
268
267
266
265
this exponent TF target: 77
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-04-17T15:19:26+00:00