is 2 10221973 - 1
has 3077121 decimal digits
takes 3.339 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
Actual26911.679465.2174 %----11.679465.2174 %
Target2685.831164.7059 %7000080000000.23782.6559 %6.068965.6433 %
Difference+1+5.8484+0.5115 %-70000-8000000-0.2378-2.6559 %+5.6106-0.4259 %

Known prime factors (2 factors, 83.9 bits, 0.00082047% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10221973981309409929.87048
24 × 3
-16167.069e-127.579e-61.542e-5
10221973179909578774861611753.998880013960
23 × 5 × 7 × 3142907
2014-10-26831429070.00010.08110.1515

1 Composite Factors:
P-1 results:
No P-1 results for M10221973


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-10-26TJAOIManual testing253254*
53.998
17
0.000
2022-08-10LordJuliusManual testing264268
2022-01-16ViliamFManual testing267269


ECM factoring results:
No ECM results for M10221973


Lucas-Lehmer results:
No L-L results for M10221973


PRP results:
dateuseridcompidcofactorsres64
2020-02-19AbsolutXTR750D
981309409
17990957877486161
CDCDA373ACF89007
2021-02-11Oliver KruseThreadripper-PC
981309409
17990957877486161
CDCDA373ACF89007


CERT results:
dateuseridcompid
2021-02-11curtiscwcm220a-19l


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
TF factor-bounds graph:
269
268
this exponent TF target: 68
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00