is 2 212485597 - 1
has 63964539 decimal digits
takes 1,866.627 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
Actual27536.011462.6667 %----36.011462.6667 %
Target279576.195264.5570 %1300000250000000189.15534.0310 %765.350565.9857 %
Difference-4-540.1838-1.8903 %-1300000-250000000-189.1553-4.0310 %-729.3391-3.3190 %

Known prime factors (1 factor, 75.9 bits, 0.00003572% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
212485597708934724871788942584792375.908166819477385987
79 × 2111638954253
2020-12-1379211163895425336.0111,465,4632,737,076

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-12-13Markus TervoorenManual testing2375.90810.890.000%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-05-21Charles A. Morrischandra2642650.018
2013-08-17Chih-Wei Huang2652660.035
2015-10-16rmaximus87002662670.070
2016-08-22XZTManual testing2672680.141
2017-11-25Nautixospleiades2682690.281
2019-02-08Niels_Mache_NextcloudManual testing2692700.563
2022-06-29LordJuliusManual testing270271
2020-06-13SRBaseManual testing2712722.251
2020-10-25SRBaseManual testing2722734.502
2020-12-13Markus TervoorenManual testing273274
2020-12-13Markus TervoorenManual testing274275


ECM factoring results:
No ECM results for M212485597


Lucas-Lehmer results:
No L-L results for M212485597


PRP results:
No PRP results for M212485597


CERT results:
No CERT results for M212485597


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
this exponent TF target: 79
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00