is 2 6928307 - 1
has 2085629 decimal digits
takes 1.511 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
Actual2674.288865.6716 %562000118214019020.532010.9478 %24.820869.4298 %
Target2674.288865.6716 %4500045000000.09102.2367 %4.379766.4395 %
Difference---+517000+1177640190+20.4410+8.7111%+20.4410+2.9904 %

Known prime factors (6 factors, 270.8 bits, 0.00390922% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6928307206186416331134.2631488
24 × 3 × 31
-16314.367e-105.317e-61.030e-5
6928307694632059831136.0165013
32 × 557
2008-09-0895571.434e-91.229e-51.797e-5
69283071294900578311236.9149345
3 × 5 × 7 × 89
2008-09-087891.351e-93.626e-64.504e-6
692830761811583731211342.491446080
27 × 5 × 17 × 41
2008-09-301281281.314e-74.047e-58.237e-5
6928307177726561394637111753.9811282611765
3 × 5 × 85507451
2014-10-245855074510.00031.47302.7511
69283071669725217331452718412167.17812050023312560
24 × 3 × 5 × 1877 × 26749297
2021-11-301877267492975.29730.46140.8606

57 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-12-27Stef42Manual testing5620001182140190
skipped known factor: 20618641633
skipped known factor: 69463205983
skipped known factor: 129490057831
skipped known factor: 6181158373121
skipped known factor: 17772656139463711
skipped known factor: 166972521733145271841
--19.0910.948%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-08Will EdgingtonManual testing??
36.016
11
2008-09-08Will EdgingtonManual testing??
36.914
12
2008-09-30markrManual testing??
42.491
13
2014-10-24TJAOIManual testing253254*
53.981
17
0.000
2022-10-25aupManual testing21267
34.263
36.016
36.914
42.491
53.981
11
11
12
13
17
2022-10-25LordJuliusManual testing263267
2021-11-30TJAOIManual testing267268*
67.178
21
0.769


ECM factoring results:
No ECM results for M6928307


Lucas-Lehmer results:
No L-L results for M6928307


PRP results:
dateuseridcompidcofactorsres64
2017-10-13kkmrkkblmbrbkc4.xlarge
20618641633
69463205983
129490057831
6181158373121
17772656139463711
3FC11EDB0026B824
2018-03-07AdolfNorManual testing
20618641633
69463205983
129490057831
6181158373121
17772656139463711
3FC11EDB0026B824
2021-12-06LaurVZero818
20618641633
69463205983
129490057831
6181158373121
17772656139463711
166972521733145271841
3FC11EDB0026B824


CERT results:
dateuseridcompid
2021-12-06mrhx


P-1 factor-bounds graph:
B1 = 562000, B2 = 1182140190 (P-1 stage 2)
B1 = 562000 (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:
267
this exponent TF target: 67
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00