is 2 9700079 - 1
has 2920015 decimal digits
takes 2.829 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L5C0BC74B055A3FBAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275788.850168.0000%43500083737500.36692.4291%789.217068.7773%0.7773%
PrimeNet2640.366962.5000%4000011000000.04133.5119%0.408363.8170%1.3170%
GPU722686.144864.7059%6500015000000.06062.5556%6.205365.6079%0.9020%
Difference+7+782.7053+3.2941%+370000+6873750+0.3063-0.1265%+783.0117+3.1695%+3.1695%

Known prime factors (1 factor, 84.2 bits, 0.00086831% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9700079226362305028175228249084812684.2271166806502442790560
25 × 33 × 5 × 13 × 3433 × 6051986327
2014-12-1334336051986327414,392139.45260.45

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-06-23T00:00:00ANONYMOUSv4_computers5000050000---0.021--0.232%
2011-07-17T01:29:00James HeinrichQ66001800004050000---0.165--1.737%
2013-04-21T22:58:00NesowaAce4350008373750---0.367--2.429%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-03-01T00:00:00ANONYMOUSv4_computers21264--0.367--
2012-02-29T19:06:00Never Odd Or EvenManual testing264265--0.385--
2012-02-29T19:06:00Never Odd Or EvenManual testing265266--0.770--
2012-02-29T19:06:00Never Odd Or EvenManual testing266267--1.541--
2012-02-29T19:06:00Never Odd Or EvenManual testing267268--3.082--
2012-04-01T07:48:00Never Odd Or EvenManual testing268269--6.163--
2013-03-08T19:32:00Never Odd Or EvenManual testing269270--12.33--
2013-03-08T19:32:00Never Odd Or EvenManual testing270271--24.65--
2013-09-10T12:23:00Never Odd Or EvenManual testing271272--49.30--
2013-09-10T12:23:00Never Odd Or EvenManual testing272273--98.61--
2013-09-10T12:23:00Never Odd Or EvenManual testing273274--197.2--
2013-09-10T12:24:00Never Odd Or EvenManual testing274275--394.4--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.331 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:1.331 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000031.331


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-04-12T00:00:00ANONYMOUSv4_computers5C0BC74B055A3FBA2.829
2003-07-30T00:00:00ANONYMOUSv4_computers5C0BC74B055A3FBA2.829


PRP results:
dateuseridcompidcofactorsres64PRP
2019-10-14T14:58:55mnd9f3b
22636230502817522824908481
7A8EE53B874001__no
2020-12-23T19:15:21rucio
22636230502817522824908481
7A8EE53B87400135no


P-1 factor-bounds graph:
B1 = 435000, B2 = 8373750 (P-1 stage 2)
B1 = 435000 (P-1 stage 1)
B1 = 180000, B2 = 4050000 (P-1 stage 2)
B1 = 180000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2020-12-23T19:15:21+00:00