is 2 600517 - 1
has 180774 decimal digits
takes 0.009 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L6E0AF0D81EBEE665double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26749.480670.1493%100000002000000000.44848.9404%49.928972.8180%2.6688%
PrimeNet2400.000050.0000%60002200000.000420.5190%0.000460.2595%10.2595%
GPU722440.000054.5455%100003600000.000615.4297%0.000661.5590%7.0135%
Difference+23+49.4806+15.6038%+9990000+199640000+0.4477-6.4894%+49.9283+11.2590%+11.2590%

Known prime factors (2 factors, 172.8 bits, 0.02877952% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
60051768935958413574443516441192582.5125739717477904409327
35521 × 877073 × 184233919
2011-03-028770731842339193,024,4840.23940.4130
60051715393285033008120949237745912890.3141281669380967409827635
5 × 11 × 79 × 10087219 × 29242518857
2020-07-311008721929242518857502,049,49235.31265.560

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
60051710611508568837457308318700605799670819920492206780
329
53172.826
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-02T00:00:00ANONYMOUSv4_computers2000200000---0.000--0.187%
2002-01-22T00:00:00ANONYMOUSv4_computers4096409600---0.001--0.404%
2002-03-10T00:00:00ANONYMOUSv4_computers8192819200---0.001--0.735%
2002-05-11T00:00:00ANONYMOUSv4_computers163841638400---0.002--1.203%
2002-06-29T00:00:00ANONYMOUSv4_computers327683276800---0.005--1.816%
2002-09-29T00:00:00ANONYMOUSv4_computers655366553600---0.009--2.568%
2003-05-04T00:00:00ANONYMOUSv4_computers13107213107200---0.018--3.449%
2016-03-17T18:48:47alpertronManual testing10000003000000012---0.057--5.461%
unknown10000000200000000---0.448--8.940%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-04-08T00:00:00ANONYMOUSv4_computers21256--0.016--
2001-10-13T00:00:00ANONYMOUSv4_computers21257--0.032--
2003-10-14T00:00:00ANONYMOUSv4_computers21258--0.064--
2008-10-11T06:36:00Sturle Sundebruch.ifi258259--0.064--
2008-10-11T07:20:00Sturle Sundebruch.ifi259260--0.128--
2010-08-13T06:51:00Architects Cubedm1_fw260261--0.256--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.614 GHz-days
Estimated T-Level:26.117
DigitsB1CurvesCompleteFacMiss
2011000429 / 1004.2901.341%
2550000429 / 2801.53221.548%
30250000143 / 6400.22379.963%

New Calculation Method

Total ECM effort:17.614 GHz-days
Estimated T-Level:26.117
DigitsB1CompleteFacMiss
201100021.1420.000%
25500002.5987.444%
302500000.24278.502%
3510000000.01898.192%
4030000000.00199.885%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002864.846
25000025000000433.643
25000025000000635.337
25000040000000373.789


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-07-06T00:00:00ANONYMOUSv4_computers6E0AF0D81EBEE6650.009


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27T12:14:05Oliver KruseGTX-3
6893595841357444351644119
DF3A5B82E6C640__no
2017-09-28T09:43:54Oliver KruseManual testing
6893595841357444351644119
DF3A5B82E6C640__no
2017-11-09T03:48:28kkmrkkblmbrbkc4.large
6893595841357444351644119
DF3A5B82E6C640__no
2020-04-19T13:10:16Oliver KruseAddPrpType5
6893595841357444351644119
6832533E63C516__no
2020-07-31T11:27:45CrypticClueManual testing
6893595841357444351644119
1539328503300812094923774591
6832533E63C516F0no


P-1 factor-bounds graph:
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
102
103
104
105
106
107
108
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
261
260
259
258
257
256
250
260
270
280
290
2100
Last modified: 2022-05-05T09:28:57+00:00