is 2 717581 - 1
has 216014 decimal digits
takes 0.014 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LF46F56904012D9__double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26741.408570.1493%500000150000000.03744.5231%41.445874.6723%24.6723%
PrimeNet2400.000050.0000%65002600000.000621.5316%0.000671.5316%21.5316%
GPU722440.000054.5455%120004500000.001016.5468%0.001071.0923%16.5468%
Difference+23+41.4084+15.6038%+488000+14550000+0.0363-12.0237%+41.4448+3.5801%+3.5801%

Known prime factors (1 factor, 68.4 bits, 0.00953737% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
7175813999362117710658925132168.438278669733292176
24 × 3 × 107 × 59239 × 915919
592399159192003-06-17101.020.00310.0035

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-02T00:00:00ANONYMOUSv4_computers2000200000---0.000--0.197%
2002-01-28T00:00:00ANONYMOUSv4_computers4096409600---0.001--0.423%
2002-03-16T00:00:00ANONYMOUSv4_computers8192819200---0.002--0.765%
2002-05-11T00:00:00ANONYMOUSv4_computers163841638400---0.003--1.246%
2002-07-14T00:00:00ANONYMOUSv4_computers327683276800---0.006--1.874%
2002-11-09T00:00:00ANONYMOUSv4_computers655376553700---0.012--2.641%
2016-03-17T18:50:43alpertronManual testing5000001500000012---0.037--4.523%
2021-03-16T10:40:11manrusManual testing5923991591962168.4380.0030.0290.0061.639%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-17T00:00:00ANONYMOUSv4_computers??68.4382117.960.03037.52
2003-08-25T00:00:00ANONYMOUSv4_computers??68.4382117.960.03037.52
1999-12-15T00:00:00ANONYMOUSv4_computers253254--0.002--
2000-05-24T00:00:00ANONYMOUSv4_computers?255--0.007--
2000-05-31T00:00:00ANONYMOUSv4_computers?255--0.007--
2001-04-01T00:00:00ANONYMOUSv4_computers?256--0.013--
2001-10-20T00:00:00ANONYMOUSv4_computers?257--0.027--


ECM factoring results:
Total ECM effort:11.630 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000337 / 1003.3703.381%
2550000337 / 2801.20429.947%
3025000044 / 6400.06993.351%

ECM Summary

B1B2factorcurvesGHz-days
5000050000002816.352
500006750000120.305
25000025000000444.973


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-10-07T00:00:00ANONYMOUSv4_computersF46F56904012D9__0.014


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27T16:37:57Oliver KruseGTX-0
399936211771065892513
EC0E9AFE382394__no
2017-10-13T15:47:50Oliver KruseThreadripperEC0E9AFE382394__no
2017-12-16T09:25:22ATHec2-1xf
399936211771065892513
EC0E9AFE382394__no
2020-04-20T17:52:19Oliver KruseAddPrpType5
399936211771065892513
8DB2117645025E__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (stage 2)
B1 = 500000 (stage 1)
B1 = 65537, B2 = 6553700 (stage 2)
B1 = 32768, B2 = 3276800 (stage 2)
B1 = 59239, B2 = 915919 (stage 2)
B1 = 16384, B2 = 1638400 (stage 2)
B1 = 65537 (stage 1)
B1 = 59239 (stage 1)
B1 = 8192, B2 = 819200 (stage 2)
B1 = 32768 (stage 1)
B1 = 4096, B2 = 409600 (stage 2)
B1 = 16384 (stage 1)
B1 = 2000, B2 = 200000 (stage 2)
B1 = 8192 (stage 1)
B1 = 4096 (stage 1)
B1 = 2000 (stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
267
257
256
255
254
2
250
260
270
280
290
2100
Last modified: 2021-03-16T10:40:11+00:00