is 2 2305111 - 1
has 693908 decimal digits
takes 0.156 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
Actual26712.890467.1642 %50000005050000003.158210.9725 %16.048770.7671 %
Target2620.266564.5161 %1200010000000.00641.7383 %0.273065.1329 %
Difference+5+12.6239+2.6481 %+4988000+504000000+3.1518+9.2342%+15.7757+5.6342 %

Known prime factors (1 factor, 30.7 bits, 0.00133226% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
230511117564945831030.710381
3 × 127
-31276.717e-119.556e-71.233e-6

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-02-18alpertronManual testing5000001500000012
skipped known factor: 1756494583
---8.314%
2021-06-10ViliamF35000000505000000
skipped known factor: 1756494583
--3.15815.462%


Trial Factoring results:
5758596061626364656667
No TF results for M2305111


ECM factoring results:
Total ECM effort:21.581 GHz-days
Estimated T-Level:21.578
DigitsB1CompleteFacMiss
20110003.3023.679%
25500000.31672.936%
302500000.02097.989%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.538
50000558214270.667
50000702556770.724
50000450334505019.65


Lucas-Lehmer results:
No L-L results for M2305111


PRP results:
dateuseridcompidcofactorsres64
2017-10-11Oliver KruseGTX-2
1756494583
E73D46BB2459318C
2017-11-23kkmrkkblmbrbkold
1756494583
E73D46BB2459318C


CERT results:
No CERT results for M2305111


P-1 factor-bounds graph:
B1 = 5000000, B2 = 505000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
107
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=21.58 ~= 55-bit
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Last modified: 2024-03-13T02:15:48+00:00