is 2 2797493 - 1
has 842130 decimal digits
takes 0.216 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
Actual26821.306567.6471 %3000000010000000009.278412.3991 %30.584971.6585 %
Target2630.570565.0794 %1500013000000.00951.7894 %0.580065.7042 %
Difference+5+20.7360+2.5677 %+29985000+998700000+9.2689+10.6097%+30.0049+5.9543 %

Known prime factors (7 factors, 287.4 bits, 0.01027471% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2797493268559329928.000748
24 × 3
-16161.292e-111.792e-63.647e-6
2797493755323111929.493135
33 × 5
2008-09-0727272.631e-113.024e-66.154e-6
27974931128788425511236.71620175
3 × 52 × 269
2008-09-07252694.473e-94.289e-65.698e-6
279749311588502852791340.076207123
3 × 72 × 1409
2008-09-304914099.591e-81.379e-51.601e-5
2797493166026230012471443.9162967411
3 × 197 × 5021
2008-09-3019750215.432e-75.150e-55.721e-5
279749311413646559912491650.020203997768
23 × 3 × 13 × 71 × 9209
2013-08-027192097.297e-56.371e-50.0001
27974936682863960099269271859.213119443801291
163 × 732784057
2015-11-031637327840570.04514.47128.3509

120 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-04-10JossManual testing279749327974930012
skipped known factor: 268559329
skipped known factor: 755323111
skipped known factor: 112878842551
skipped known factor: 1158850285279
skipped known factor: 16602623001247
skipped known factor: 1141364655991249
---13.316%
2019-07-04alpertronManual testing30000000100000000012
skipped known factor: 268559329
skipped known factor: 755323111
skipped known factor: 112878842551
skipped known factor: 1158850285279
skipped known factor: 16602623001247
skipped known factor: 1141364655991249
skipped known factor: 668286396009926927
---16.878%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-07Will EdgingtonManual testing??
29.493
9
2008-09-07Will EdgingtonManual testing??
36.716
12
2008-09-30markrManual testing??
40.076
13
2008-09-30markrManual testing??
43.916
14
2013-08-02Squeeky_SquirrelT7500_2200??
50.020
16
2015-11-03TJAOIManual testing259260*
59.213
18
0.006
2022-03-11LordJuliusManual testing260266
2019-12-28Seth_TrManual testing266267
2022-12-20LordJuliusManual testing267268


ECM factoring results:
Total ECM effort:0.649 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.649


Lucas-Lehmer results:
No L-L results for M2797493


PRP results:
dateuseridcompidcofactorsres64
2017-09-30alpertronManual testing
112878842551
1141364655991249
1158850285279
16602623001247
268559329
668286396009926927
755323111
49DBF4CFDB33CF48
2017-11-16Oliver KruseGTX-0
268559329
755323111
112878842551
1158850285279
16602623001247
1141364655991249
668286396009926927
49DBF4CFDB33CF48


CERT results:
No CERT results for M2797493


P-1 factor-bounds graph:
B1 = 30000000, B2 = 1000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 2797493, B2 = 279749300 (P-1 stage 2)
B1 = 2797493 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00