is 2 9636421 - 1
has 2900852 decimal digits
takes 2.811 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L9A82B66D0C13A9D3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.083564.1791%11500021850000.09633.4712%3.179865.4225%1.2434%
PrimeNet2640.369462.5000%4000011000000.04133.5084%0.410763.8156%1.3156%
GPU722686.185464.7059%6000014000000.05632.4695%6.241665.5775%0.8716%
Difference-1-3.1019-0.5268%+55000+785000+0.0401+1.0017%-3.0618-0.1550%-0.1550%

Known prime factors (1 factor, 79.0 bits, 0.00081970% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
96364215999884667150548625668792478.98931131291727242659
719 × 99289 × 436080949
2014-11-11992894360809499,568.810.08818.767

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-09T04:56:00Carsten Kossendeyleela55000852500---0.042--2.430%
2013-02-11T09:47:00NesowaEPC1150002185000---0.096--3.471%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-05-30T00:00:00ANONYMOUSv4_computers21264--0.369--
2013-08-28T07:17:00NesowaManual testing264265--0.388--


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_computers9A82B66D0C13A9D32.811
2003-06-09T00:00:00ANONYMOUSv4_computers9A82B66D0C13A9D32.811


PRP results:
dateuseridcompidcofactorsres64PRP
2019-10-06T11:00:28mnd975204b
599988466715054862566879
B9845562269D21__no
2020-12-18T08:39:33kutensspica-b
599988466715054862566879
B9845562269D215Fno


P-1 factor-bounds graph:
B1 = 115000, B2 = 2185000 (P-1 stage 2)
B1 = 115000 (P-1 stage 1)
B1 = 55000, B2 = 852500 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
TF factor-bounds graph:
267
265
264
250
260
270
280
290
2100
Last modified: 2020-12-18T08:39:33+00:00