is 2 2236189 - 1
has 673160 decimal digits
takes 0.147 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
Actual26713.287767.1642 %10000001060000000.64077.7378 %13.928569.7049 %
Target2620.274764.5161 %110009500000.00591.6579 %0.280765.1044 %
Difference+5+13.0130+2.6481 %+989000+105050000+0.6348+6.0798%+13.6478+4.6005 %

Known prime factors (2 factors, 88.3 bits, 0.00394823% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
223618949196159825.55211
11
-1112.004e-121.473e-71.940e-7
223618976906026069620354571962.7381719577953152
27 × 29 × 103 × 1301 × 3457
2016-04-18130134570.34620.00010.0003

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-04-18alpertronManual testing500000150000001221962.7380.1238.286%
2021-06-30Dylan Delgadolaptop-ryzen737001000000106000000
skipped known factor: 49196159
skipped known factor: 7690602606962035457
--0.64111.664%


Trial Factoring results:
5758596061626364656667
No TF results for M2236189


ECM factoring results:
Total ECM effort:7.803 GHz-days
Estimated T-Level:21.541
DigitsB1CompleteFacMiss
20110003.3093.656%
25500000.30873.479%
302500000.02098.062%


ECM Summary

B1B2factorcurvesGHz-days
50000465000070.583
500005000000100.858
50000631997670.666
50000695857670.698
500007000000504.998


Lucas-Lehmer results:
No L-L results for M2236189


PRP results:
dateuseridcompidcofactorsres64
2017-10-09Oliver KruseGTX-1
49196159
7690602606962035457
6FE44FF740E3CF01
2017-11-20kkmrkkblmbrbkc4.xlarge
49196159
7690602606962035457
6FE44FF740E3CF01


CERT results:
No CERT results for M2236189


P-1 factor-bounds graph:
B1 = 1000000, B2 = 106000000 (P-1 stage 2)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
this exponent TF target: 62
TF double-checked to: 67
ECM T-Level=21.54 ~= 55-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00