is 2 2483659 - 1
has 747656 decimal digits
takes 0.172 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L937BB45D144E8FC4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26823.998867.6471%2382500857701000.69657.5489%24.695470.0894%2.4423%
PrimeNet2590.030962.7119%100001800000.00192.5348%0.032963.6570%0.9452%
GPU722630.642665.0794%110001600000.00191.3802%0.644565.5614%0.4820%
Difference+5+23.3562+2.5677%+2371500+85610100+0.6946+6.1687%+24.0508+4.5280%+4.5280%

Known prime factors (1 factor, 69.0 bits, 0.00277815% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
24836595902532750893374904092169.000118827358161756
22 × 3 × 37 × 1283 × 208596403
2020-05-27128320859640331.6891.14312.1348

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-14T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.235%
2003-10-31T00:00:00Team Prime Ribv4_computers15000228750---0.003--0.786%
2010-11-20T12:25:00Jocelyn LaroucheManual testing2000020000---0.002--0.263%
2011-01-21T13:24:00Oscar Östlin950001947500---0.020--2.379%
2014-09-03T20:52:00Jocelyn LaroucheManual testing120843120843---0.012--0.917%
2014-11-07T23:01:00mikrMSI238250085770100---0.697--7.549%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-05-02T00:00:00ANONYMOUSv4_computers21259--0.031--
2016-02-23T16:29:15Mark RoseManual testing259260--0.031--
2009-01-15T00:05:00Sturle Sundeghini.ifi260261--0.062--
2012-06-09T08:43:00Sebastian HornbostelManual testing261262--0.124--
2013-08-21T07:39:00David CampeauManual testing262263--0.395--
2015-03-03T21:37:00VictordeHollanderManual testing263264--0.790--
2015-03-03T21:37:00VictordeHollanderManual testing264265--1.504--
2015-10-29T11:36:22ramgeisManual testing265266--3.009--
2017-07-22T20:28:37Gordon SpenceManual testing266267--6.018--
2019-07-01T11:11:00TJAOIManual testing267268--12.04--


ECM factoring results:

Old Calculation Method

Total ECM effort:3.766 GHz-days
Estimated T-Level:2.050
DigitsB1CurvesCompleteFacMiss
201100041 / 1000.41066.228%
255000041 / 2800.14686.356%

New Calculation Method

Total ECM effort:3.766 GHz-days
Estimated T-Level:2.050
DigitsB1CompleteFacMiss
20110001.32326.645%
25500000.12088.733%
302500000.00799.267%


ECM Summary

B1B2factorcurvesGHz-days
500005000000393.582
50000500000020.184


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-04-21T00:00:00garyfuv4_computers937BB45D144E8FC40.172
1999-08-16T00:00:00ANONYMOUSv4_computers937BB45D144E8FC40.172
2018-05-30T19:36:36kkmrkkblmbrbkold937BB45D144E8FC40.172


PRP results:
dateuseridcompidcofactorsres64PRP
2020-05-27T15:38:15CrypticCluecruncher
590253275089337490409
965444BE7CE9601Fno
2020-05-29T01:47:26Luigi Morelli9800X
590253275089337490409
965444BE7CE9601Fno


P-1 factor-bounds graph:
B1 = 2382500, B2 = 85770100 (P-1 stage 2)
B1 = 2382500 (P-1 stage 1)
B1 = 95000, B2 = 1947500 (P-1 stage 2)
B1 = 120843 (P-1 stage 1)
B1 = 95000 (P-1 stage 1)
B1 = 15000, B2 = 228750 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
259
250
260
270
280
290
2100
Last modified: 2020-05-29T01:47:26+00:00