is 2 1592923 - 1
has 479518 decimal digits
takes 0.071 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF3FE2C8AE962D016double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26718.653768.6567%100000002000000001.31819.7470%19.971871.7118%3.0550%
PrimeNet2570.012163.1579%70001200000.00092.5459%0.012964.0959%0.9380%
GPU722610.192865.5738%6500600000.00061.0553%0.193565.9371%0.3633%
Difference+6+18.4609+3.0829%+9993500+199940000+1.3175+8.6917%+19.7784+5.7747%+5.7747%

Known prime factors (1 factor, 78.0 bits, 0.00489635% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
15929233011877878963316670669692477.99594539343049328708
22 × 32 × 701 × 6197 × 604519849
2016-11-10619760451984928,1492.13353.9841

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-02-03T18:15:00James HeinrichWHS850001445000---0.010--2.278%
2013-11-24T18:57:00David Campeaui5-2500k98000028420000---0.160--6.027%
2015-04-25T17:28:00VictordeHollanderManual testing10000000200000000---1.318--9.747%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-10-29T00:00:00ANONYMOUSv4_computers21257--0.012--
2003-07-30T00:00:00ANONYMOUSv4_computers21258--0.024--
2016-02-23T16:28:40Mark RoseManual testing258260--0.072--
2010-05-10T13:40:00Architects Cubedm1_f2260261--0.096--
2016-02-23T16:28:40Mark RoseManual testing261262--0.193--
2010-06-29T03:37:00GrunwalderGIMPManual testing21263--1.002--
2016-02-23T16:28:40Mark RoseManual testing262263--0.616--
2015-03-04T11:02:00snme2pm1Manual testing263264--1.233--
2015-03-04T11:02:00snme2pm1Manual testing264265--2.346--
2015-10-11T16:52:58ramgeisManual testing265266--4.691--


ECM factoring results:

Old Calculation Method

Total ECM effort:14.066 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:14.066 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024813.90
50000500000030.168


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-13T00:00:00ANONYMOUSv4_computersF3FE2C8AE962D0160.071
2015-07-10T01:00:00MadPooManual testingF3FE2C8AE962D0160.071


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T02:09:33Oliver KruseGTX-0
301187787896331667066969
B8BE7412A1FC0C__no
2017-10-31T19:37:06kkmrkkblmbrbkc4.xlarge
301187787896331667066969
B8BE7412A1FC0C__no


P-1 factor-bounds graph:
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 980000, B2 = 28420000 (P-1 stage 2)
B1 = 980000 (P-1 stage 1)
B1 = 85000, B2 = 1445000 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
266
265
264
263
262
261
260
258
257
250
260
270
280
290
2100
Last modified: 2019-09-23T15:15:32+00:00