is 2918737-1
has 276,568 decimal digits
takes 0.022 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L79D2A84F43AAE2__double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2631.737268.2540%1,000,00030,000,0000.09078.1920%1.827976.4459%26.4459%
PrimeNet2400.000050.0000%8,000360,0000.001023.3682%0.001073.3682%23.3682%
GPU722440.000054.5455%15,000600,0000.001618.0268%0.001772.5722%18.0268%
Difference+19+1.7372+13.7085%+985,000+29,400,000+0.0891-9.8348%+1.8263+3.8737%+3.8737%

Known prime factors (4 factors, 284.4 bits, 0.03095262% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
9187374050526964483328711858.491220439960755
5 × 7 × 17 × 97 × 167 × 22871
16722,8712002-02-240.05104.937e-58.185e-5
918737516684367731313883032065.48628119275033623
181 × 431 × 360452693
431360,452,6932016-03-1111.6080.69061.2897
918737207550463405356397227432374.13611295423140972683
47 × 191 × 1258262575579
1911.25826e+122016-03-115,501.02,410.54,502.2
918737926806984393847319065122072686.26050439189038530467319
257 × 1213 × 940727 × 171992917
940,727171,992,9172016-03-1127,539,5720.36080.6154

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
9187372092843963622706779293298586609980791338123.977
918737840688748514406446737213169984701318515340132.627
918737107238079956937769828502328344252959327512943139.622
9187373754056681158758185758456573147199336085629744144.751
918737478866680740500695322198722262149460452651472146151.746
918737192359219098263925542383703465058396435362502380149160.396
91873743437073448499563840883792453666503778351052725328
4877465359
60198.113
91873719396624027320275683276026381133648089561294135831
19756489693991
64210.237
91873777915620382447452922128478209133563231682650382888
1583674145662671
66218.887
91873799389001497075774623171582016130829203464252780648
023917948547999703
68225.882
91873740257783053697935014411313507574366348482631096826
750310055203960175648304276153137313
86284.373
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-08T00:00:00ANONYMOUSv4_computers2,000200,000---0.000--0.493%
2016-03-17T18:54:14alpertronManual testing200,0005,000,0006---0.016--5.008%
unknown1,000,00030,000,000---0.091--8.192%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-02-24T00:00:00ANONYMOUSv4_computers??58.491180.0090.0470.019
2003-08-25T00:00:00ANONYMOUSv4_computers??58.491180.0090.0470.019
2000-06-11T00:00:00ANONYMOUSv4_computers?255--0.005--
2000-12-14T00:00:00ANONYMOUSv4_computers?256--0.010--
2001-10-13T00:00:00ANONYMOUSv4_computers?257--0.021--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,0001815.096
50,0005,000,00070.197
50,0005,000,00050.141
50,0005,000,000882.478
250,00025,000,000446.194


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-01-02T00:00:00ANONYMOUSv4_computers79D2A84F43AAE2__0.022


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T09:18:58Oliver KruseGTX-0
405052696448332871
51668436773131388303
20755046340535639722743
92680698439384731906512207
392BCF9970D3A6FAno
2017-10-05T21:11:31Oliver KruseManual testing
405052696448332871
51668436773131388303
20755046340535639722743
92680698439384731906512207
392BCF9970D3A6__no
2017-10-14T20:05:01Oliver KruseThreadripper392BCF9970D3A6__no
2017-12-22T15:36:37ATHec2-1xf
405052696448332871
51668436773131388303
20755046340535639722743
92680698439384731906512207
392BCF9970D3A6__no
2020-04-23T12:43:13Oliver KruseAddPrpType5
405052696448332871
51668436773131388303
20755046340535639722743
92680698439384731906512207
61EE53F0545310__no


P-1 factor-bounds graph:
B1 = 1,000,000, B2 = 30,000,000 (stage 2)
B1 = 1,000,000 (stage 1)
B1 = 200,000, B2 = 5,000,000 (stage 2)
B1 = 200,000 (stage 1)
B1 = 2,000, B2 = 200,000 (stage 2)
B1 = 2,000 (stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
263
257
256
255
2
250
260
270
280
290
2100
Last modified: 2020-04-23T12:43:13+00:00