is 2 11956333 - 1
has 3599215 decimal digits
takes 4.603 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
Actual2672.485264.1791 %40000042845985013.24279.9264 %15.727967.7348 %
Target2684.985264.7059 %80000100000000.34642.9395 %5.331665.7433 %
Difference-1-2.5000-0.5268 %+320000+418459850+12.8964+6.9869%+10.3964+1.9915 %

Known prime factors (4 factors, 246.9 bits, 0.00206518% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1195633310511051466971339.93543956
22 × 33 × 11 × 37
-27379.276e-91.538e-53.068e-5
1195633352823722517170777991962.196220902690303
32 × 24544743367
2016-07-089245447433670.0621746.531,394.3
1195633357270989597586586343532272.278239500646216472
23 × 3 × 19 × 443 × 823 × 1440583
2021-11-218231440583121.750.04420.0818
1195633367276365935052038068312272.511281341971384755
5 × 17 × 192 × 47 × 67 × 751 × 3877
2021-11-217513877140.850.00050.0009

11 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-11-21nordisweet1640000040000012272.5110.2232.139%
2021-11-21nordisweet164000001200000022272.2780.5765.393%
2023-05-20nordisweet16_30.8b14400000428459850
skipped known factor: 1051105146697
skipped known factor: 5727098959758658634353
skipped known factor: 6727636593505203806831
--16.479.123%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-07-08TJAOIManual testing262263*
62.196
19
0.016


ECM factoring results:
No ECM results for M11956333


Lucas-Lehmer results:
No L-L results for M11956333


PRP results:
dateuseridcompidcofactorsres64
2021-12-09LaurVZero818
1051105146697
5282372251717077799
6727636593505203806831
5727098959758658634353
98BD1395EDA22842


CERT results:
dateuseridcompid
2021-12-09Ben Deloi-0f57914f2418b9527


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000, B2 = 12000000 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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1010
1011
TF factor-bounds graph:
this exponent TF target: 68
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00