is 2 223 - 1
has 68 decimal digits
takes 0.000 GHz-days to do one PRP test
Has been fully factored.
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 PRP tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP4C9158138FC3CC0BPRP-tested
Cofactor is a certified prime

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actualunknown----0.00000.0000%
Target2440.010581.8182%500500000.00000.3636%0.010581.8843%
Difference-44-0.0105-81.8182%-500-500000.0000-0.3636%-0.0105-81.8843%

Known prime factors (6 factors, 223.0 bits, 100.00000000% known):
Remaining cofactor is a certified-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
22318287514.15941
41
-1419.873e-124.687e-116.081e-11
223196687617.586441
32 × 72
-49498.577e-117.223e-101.470e-9
2231466449720.4843288
23 × 3 × 137
-81371.072e-92.215e-102.400e-10
2232916841721.4766540
22 × 3 × 5 × 109
-51091.773e-91.572e-101.572e-10
22314694952623987801238092270.3163294832426903094448
24 × 3 × 72 × 411743 × 3402277943
-41174334022779431,890,3910.00270.0051
223
hide decimal representation
596242599987116128415063
2478.980

26 Composite Factors:
P-1 results:
No P-1 results for M223


Trial Factoring results:
No TF results for M223


ECM factoring results:
No ECM results for M223


Lucas-Lehmer results:
No L-L results for M223


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-24Luke_Richardswork-laptop4C9158138FC3CC0Bno
2018-01-24-p95holder- @bopoh13Lucius_Yorkfield
18287
196687
1466449
2916841
1469495262398780123809
PRP


P-1 factor-bounds graph:
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67.9
250
260
270
280
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Last modified: 2023-10-02T12:12:48+00:00