is 2 9252169 - 1
has 2785181 decimal digits
takes 2.557 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L247202ED2A709112double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.211664.1791%11000022825000.09153.4603%3.303165.4186%1.2395%
PrimeNet2640.384762.5000%4000011000000.03923.4862%0.423963.8073%1.3073%
GPU722686.442364.7059%6000013000000.05112.4105%6.493465.5566%0.8508%
Difference-1-3.2307-0.5268%+50000+982500+0.0404+1.0498%-3.1903-0.1380%-0.1380%

Known prime factors (1 factor, 72.0 bits, 0.00077840% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
925216947852692255740645654072272.019258602562576087
3 × 29 × 90887 × 32704823
2014-06-189088732704823121.420.74851.3337

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-04-29T00:00:00Sturle Sundev4_computers1100002282500---0.092--3.460%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-29T00:00:00ANONYMOUSv4_computers21262--0.066--
1999-03-26T00:00:00ANONYMOUSv4_computers21264--0.385--
2013-09-07T07:13:00NesowaManual testing264265--0.404--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.420 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.420 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.420


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-03-08T00:00:00ANONYMOUSv4_computers247202ED2A7091122.557
2003-08-25T00:00:00ANONYMOUSv4_computers247202ED2A7091122.557


PRP results:
dateuseridcompidcofactorsres64PRP
2019-08-14T17:26:20mnd9office
4785269225574064565407
AE44FCD68A217D__no
2020-11-06T15:17:33kutenssol
4785269225574064565407
AE44FCD68A217D56no


P-1 factor-bounds graph:
B1 = 110000, B2 = 2282500 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
267
265
264
262
250
260
270
280
290
2100
Last modified: 2020-11-06T15:17:33+00:00