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
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRPCDCDA373ACF890__
unverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26911.679465.2174%----11.679465.2174%0.0000%
PrimeNet2640.348262.5000%4500013000000.05373.7569%0.401963.9088%1.4088%
GPU722685.831164.7059%7000016000000.07262.6559%5.903765.6433%0.9374%
Difference+1+5.8484+0.5115%-70000-1600000-0.0726-2.6559%+5.7757-0.4259%-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:
exponentprime factorscomposite factordigitsbits*
10221973176546962420998390565888492683.868
P-1 results:
No P-1 results for M10221973


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-10-26T12:47:00TJAOIManual testing253254*53.998172.49002e-57.1345.31961e-5
2022-08-10T19:28:53LordJuliusManual testing2126453.998170.0007.1340.000
2022-08-10T19:28:53LordJuliusManual testing2126429.87097.06948e-127.1341.51036e-11
2022-08-10T19:28:53LordJuliusManual testing264265--0.366--
2022-08-10T19:28:53LordJuliusManual testing265266--0.731--
2022-08-10T19:28:53LordJuliusManual testing266267--1.462--
2022-01-16T20:15:38ViliamFManual testing267268--2.924--
2022-08-10T19:28:53LordJuliusManual testing267268--2.924--
2022-01-16T20:15:38ViliamFManual testing268269--5.848--


ECM factoring results:
No ECM results for M10221973


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


PRP results:
dateuseridcompidcofactorsres64PRP
2020-02-19T03:59:58AbsolutXTR750D
981309409
17990957877486161
CDCDA373ACF890__no
2021-02-11T14:46:52Oliver KruseThreadripper-PC
981309409
17990957877486161
CDCDA373ACF89007no


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
TF factor-bounds graph:
269
268
267
266
265
264
254
220
230
240
250
260
270
280
290
2100
Last modified: 2022-08-10T19:28:53+00:00