is 2 1700807 - 1
has 511994 decimal digits
takes 0.080 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L370E79984951B2E9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26835.045169.1176%100000002000000001.38889.1085%36.433971.9306%2.8129%
PrimeNet2570.011363.1579%80001300000.00102.7315%0.012364.1643%1.0064%
GPU722610.180665.5738%70001000000.00081.3014%0.181466.0218%0.4480%
Difference+7+34.8644+3.5439%+9993000+199900000+1.3880+7.8071%+36.2524+5.9088%+5.9088%

Known prime factors (1 factor, 89.3 bits, 0.00525236% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17008077794256591535895638693670072789.333229134069636822274329
32 × 2867357 × 8879027296133
2019-12-252867357887902729613394,917,59233,01261,657

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-01-27T22:35:00Jocelyn LaroucheManual testing5000050000---0.003--0.488%
2011-02-07T12:40:00Carsten Kossendeyleela900001507500---0.011--2.082%
2014-03-31T21:13:00Jocelyn LaroucheManual testing100000100000---0.007--0.765%
2014-05-03T00:50:00Jocelyn LaroucheManual testing150000150000---0.010--0.967%
2014-10-01T23:01:00Jocelyn LaroucheManual testing187737187737---0.013--1.093%
2015-01-07T04:02:00Jocelyn LaroucheManual testing281605281605---0.019--1.344%
2015-02-02T07:32:00Jocelyn LaroucheManual testing309765309765---0.021--1.407%
2015-02-16T20:56:00Jocelyn LaroucheManual testing374815374815---0.026--1.540%
2015-02-18T11:51:00VictordeHollanderManual testing10000000200000000---1.389--9.109%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-10T00:00:00ANONYMOUSv4_computers21257--0.011--
2003-02-09T00:00:00ANONYMOUSv4_computers21258--0.023--
2016-02-23T16:28:47Mark RoseManual testing258260--0.068--
2010-04-21T13:12:00Architects Cubeda3_bu2260261--0.090--
2016-02-23T16:28:47Mark RoseManual testing261262--0.181--
2010-10-04T14:38:00GrunwalderGIMPManual testing21263--0.938--
2016-02-23T16:28:47Mark RoseManual testing262263--0.577--
2015-02-13T10:43:00VictordeHollanderManual testing263264--1.154--
2015-02-13T10:43:00VictordeHollanderManual testing264265--2.197--
2015-08-30T20:42:00ramgeisManual testing265266--4.394--
2018-06-18T10:05:51TJAOIManual testing266267--8.787--
2019-08-06T10:06:05TJAOIManual testing267268--17.57--


ECM factoring results:

Old Calculation Method

Total ECM effort:33.585 GHz-days
Estimated T-Level:25.445
DigitsB1CurvesCompleteFacMiss
2011000337 / 1003.3703.381%
2550000337 / 2801.20429.947%
3025000057 / 6400.08991.472%

New Calculation Method

Total ECM effort:33.585 GHz-days
Estimated T-Level:25.445
DigitsB1CompleteFacMiss
201100013.7820.000%
25500001.50322.245%
302500000.12488.303%
3510000000.00899.157%


ECM Summary

B1B2factorcurvesGHz-days
50000500000028016.64
250000250000005014.86
2500002500000072.081


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-13T00:00:00ANONYMOUSv4_computers370E79984951B2E90.080
2015-06-28T05:06:00MadPooManual testing370E79984951B2E90.080


PRP results:
dateuseridcompidcofactorsres64PRP
2019-12-26T09:20:33Niels_Mache_NextcloudSuperDry-X
779425659153589563869367007
ED03C82F90020FCDno
2019-12-28T09:00:25arnaudstm-11-010
779425659153589563869367007
ED03C82F90020FCDno


P-1 factor-bounds graph:
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 374815 (P-1 stage 1)
B1 = 309765 (P-1 stage 1)
B1 = 281605 (P-1 stage 1)
B1 = 187737 (P-1 stage 1)
B1 = 90000, B2 = 1507500 (P-1 stage 2)
B1 = 150000 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
258
257
250
260
270
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2100
Last modified: 2019-12-28T09:00:25+00:00