is 2 1459849 - 1
has 439459 decimal digits
takes 0.056 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L5212B3994A71F529double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26720.354168.6567%2000000600000000.28577.2341%20.639870.9241%2.2674%
PrimeNet2560.006662.5000%70001200000.00072.9079%0.007363.5905%1.0905%
GPU722600.105265.0000%6500900000.00061.3985%0.105865.4895%0.4895%
Difference+7+20.2489+3.6567%+1993500+59910000+0.2851+5.8356%+20.5339+5.4346%+5.4346%

Known prime factors (2 factors, 149.5 bits, 0.01023990% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
145984927533304914610380574232271.222943018932595439
7 × 307 × 421 × 1042321991
2015-05-164211042321991633.753.14395.8720
14598493632675162058850465521912478.265124419551681675655
33 × 5 × 401 × 6091 × 377330483
2019-03-22609137733048366,5761.13842.1257

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1459849100019552892698008230954131633864706242446379346149.487
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers15000243750---0.002--0.840%
2010-09-24T14:15:00Rob_Deetwopc100000200000---0.006--1.218%
2010-09-25T16:46:00Rob_Deetwopc200000300000---0.011--1.521%
2010-09-26T14:11:00Rob_Deetwopc2000001000000---0.013--2.335%
2010-09-27T12:55:00Rob_Deetwopc2000002000000---0.017--2.822%
2010-09-28T13:30:00Rob_Deetwopc2000003000000---0.020--3.114%
2010-09-29T13:16:00Rob_Deetwopc2000004000000---0.023--3.323%
2010-09-30T12:55:00Rob_Deetwopc2000005000000---0.026--3.488%
2014-11-19T23:20:00Jocelyn LaroucheManual testing243966243966---0.014--1.387%
2015-01-26T12:23:00Jocelyn LaroucheManual testing295198295198---0.016--1.520%
2015-01-28T21:36:00Jocelyn LaroucheManual testing324717324717---0.018--1.590%
2015-01-31T14:55:00Jocelyn LaroucheManual testing357188357188---0.020--1.662%
2015-02-14T12:30:00Jocelyn LaroucheManual testing392906392906---0.022--1.735%
2015-02-19T20:32:00alpertronManual testing200000060000000---0.286--7.234%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21T00:00:00ANONYMOUSv4_computers21258--0.026--
2010-05-10T06:20:00Architects Cubeda3_bu2260261--0.105--
2011-04-05T20:59:00GrunwalderGIMPManual testing21263--1.093--
2015-03-29T10:24:00snme2pm1Manual testing263264--1.345--
2015-03-29T10:24:00snme2pm1Manual testing264265--2.559--


ECM factoring results:

Old Calculation Method

Total ECM effort:11.896 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:11.896 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000023511.14
50000500000020.095
500005000000140.664


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-29T00:00:00ANONYMOUSv4_computers5212B3994A71F5290.056


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T03:00:37Oliver KruseGTX-1
2753330491461038057423
BC694A727F6E89__no
2017-10-27T19:29:10kkmrkkblmbrbkc4.xlarge
2753330491461038057423
BC694A727F6E89__no
2019-03-23T14:22:22EthanDLexxBuntu
2753330491461038057423
363267516205885046552191
BDCD14A7ED0F35FCno
2019-03-25T09:31:33arnaudstm-11-010
2753330491461038057423
363267516205885046552191
BDCD14A7ED0F35FCno


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 200000, B2 = 4000000 (P-1 stage 2)
B1 = 392906 (P-1 stage 1)
B1 = 357188 (P-1 stage 1)
B1 = 200000, B2 = 3000000 (P-1 stage 2)
B1 = 324717 (P-1 stage 1)
B1 = 200000, B2 = 2000000 (P-1 stage 2)
B1 = 295198 (P-1 stage 1)
B1 = 243966 (P-1 stage 1)
B1 = 200000, B2 = 1000000 (P-1 stage 2)
B1 = 200000, B2 = 300000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 15000, B2 = 243750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
265
264
263
261
258
250
260
270
280
290
2100
Last modified: 2019-03-25T09:31:33+00:00