is 2 1152509 - 1
has 346940 decimal digits
takes 0.034 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
Actual26725.781968.6567%300000100000000.03564.1396%25.817569.9542%
Target2600.133365.0000%50002080000.00070.7712%0.134065.2699%
Difference+7+25.6487+3.6567%+295000+9792000+0.0349+3.3684%+25.6836+4.6843%

Known prime factors (3 factors, 112.7 bits, 0.00978094% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
115250910303430471029.940447
3 × 149
-31496.806e-114.708e-76.333e-7
11525092367991091771237.785102732
22 × 3 × 7 × 1223
2008-07-15712231.964e-83.148e-65.342e-6
1152509352051645738791445.000915273271
13 × 59 × 19913
2008-08-2659199137.739e-64.902e-58.710e-5

4 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17alpertronManual testing3000001000000012-
skipped known factor: 1030343047
skipped known factor: 236799109177
skipped known factor: 35205164573879
--0.036--4.140%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15J FeitsmaManual testing??37.785123.75500e-90.2022.21885e-8
2008-08-26ANONYMOUSManual testing??45.0009143.67170e-60.2022.16954e-5


ECM factoring results:
Total ECM effort:17.750 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002819.96
25000025000000447.795


Lucas-Lehmer results:
No L-L results for M1152509


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29Oliver KruseGTX-3
1030343047
236799109177
35205164573879
A9382A6DBDF21B__no
2017-10-17Oliver KruseThreadripper
1030343047
236799109177
35205164573879
A9382A6DBDF21B__no
2018-01-02ATHec2-1xf
1030343047
236799109177
35205164573879
A9382A6DBDF21B__no


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
TF factor-bounds graph:
2
this exponent TF target: 60
TF double-checked to: 67.8
ECM T-Level=25.66 ~= 69-bit
250
260
270
Last modified: 2023-06-05T21:50:05+00:00