is 2 56017229 - 1
has 16862867 decimal digits
takes 118.725 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
Actual2718.534563.3803 %----8.534563.3803 %
Target27334.147464.3836 %3600006000000011.09223.9392 %45.239765.7866 %
Difference-2-25.6129-1.0033 %-360000-60000000-11.0922-3.9392 %-36.7052-2.4063 %

Known prime factors (1 factor, 81.2 bits, 0.00014493% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5601722927552244795752837692406012581.18824592652374640700
22 × 3 × 52 × 7 × 181 × 103567 × 624721
2012-01-2310356762472116,6900.40550.6478

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-01-23hustensaftW7hm2581.1884.0040.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-01ANONYMOUSv4_computers212532.14000e-5
2000-03-01ANONYMOUSv4_computers212544.28000e-5
2000-05-31ANONYMOUSv4_computers212560.000
2001-09-16ANONYMOUSv4_computers212570.000
2002-08-31ANONYMOUSv4_computers212580.001
2004-09-021997rj7v4_computers212600.001
2022-06-15LordJuliusManual testing260263
2008-02-14James HeinrichWHS2632640.034
2008-02-20arnaudSRV-2202642650.067
2008-02-29ANONYMOUSSRV-2202652660.133
2008-03-02James HeinrichWHS2662670.267
2009-11-18Son JohanRetired2672680.534
2011-04-09TheJudgerManual testing2682703.202
2011-08-05GrunwalderGIMPcompute-0-12702714.269


ECM factoring results:
No ECM results for M56017229


Lucas-Lehmer results:
No L-L results for M56017229


PRP results:
No PRP results for M56017229


CERT results:
No CERT results for M56017229


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
271
270
268
267
266
265
264
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00