is 2 6909587 - 1
has 2079993 decimal digits
takes 1.507 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
Actual2674.300465.6716 %569000128066400022.231311.0530 %26.531769.4660 %
Target2674.300465.6716 %4500045000000.09102.2357 %4.391466.4391 %
Difference---+524000+1276164000+22.1403+8.8173%+22.1403+3.0268 %

Known prime factors (3 factors, 137.9 bits, 0.00199594% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6909587179649263927.42113
13
-1132.595e-125.229e-76.435e-7
690958777586619803498971652.785561441804
22 × 3 × 72 × 11 × 61 × 1423
2014-08-236114230.00014.275e-54.574e-5
69095872350961299619174091857.70617012314192
24 × 233 × 1951 × 2339
2015-07-10195123390.00300.00060.0013

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-12-26Stef42Manual testing5690001280664000
skipped known factor: 179649263
skipped known factor: 7758661980349897
skipped known factor: 235096129961917409
--20.6711.053%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-08-23TJAOIManual testing??
52.785
16
0.000
2015-07-10TJAOIManual testing257258*
57.706
18
0.002


ECM factoring results:
No ECM results for M6909587


Lucas-Lehmer results:
No L-L results for M6909587


PRP results:
dateuseridcompidcofactorsres64
2017-10-08kkmrkkblmbrbkManual testing
179649263
7758661980349897
235096129961917409
1D940D2627F5CABF
2019-01-21ATHec2-PRPCFDC
179649263
7758661980349897
235096129961917409
1D940D2627F5CABF


CERT results:
No CERT results for M6909587


P-1 factor-bounds graph:
B1 = 569000, B2 = 1280664000 (P-1 stage 2)
B1 = 569000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 67
TF double-checked to: 67
250
260
270
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00