is 2 5069551 - 1
has 1526087 decimal digits
takes 0.703 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L07B39A149025A704double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.861365.6716%1500000450000000.77787.6737%6.639168.3059%2.6343%
PrimeNet2610.060662.2951%220005000000.00973.4061%0.070263.5794%1.2843%
GPU722651.439164.6154%340007000000.01412.4216%1.453265.4723%0.8569%
Difference+2+4.4221+1.0563%+1466000+44300000+0.7637+5.2521%+5.1858+2.8336%+2.8336%

Known prime factors (1 factor, 85.5 bits, 0.00168732% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5069551562370208954991254794008572685.5405546548490734103028
22 × 3 × 11 × 67 × 1951 × 75167 × 4276511
2017-07-097516742765113,047,1320.06110.0875

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-08-04T00:00:00ANONYMOUSv4_computers25000162500---0.007--1.109%
2009-08-13T18:02:00harleeP4_2600600001065000---0.023--2.361%
2017-07-09T08:40:56mikrS064150000045000000122685.5400.7781.4051.5567.674%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-14T00:00:00Carlv4_computers21261--0.061--
2008-12-30T05:53:00Sturle Sundebach.ifi261262--0.061--
2009-08-08T04:06:00GrunwalderGIMPManual testing21263--0.315--
2016-02-23T16:39:08Mark RoseManual testing262263--0.194--
2014-12-14T14:43:00VictordeHollanderManual testing263264--0.387--
2014-12-14T14:43:00VictordeHollanderManual testing264265--0.737--
2015-08-02T05:19:00snme2pm1Manual testing265266--1.474--
2016-05-22T18:45:48Gordon SpenceManual testing266267--2.948--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.265 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:1.265 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.19482.403%
25500000.01798.266%
302500000.00199.892%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.265


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21T00:00:00ANONYMOUSv4_computersE26D1959E018DA__0.703
2001-01-28T00:00:00ANONYMOUSv4_computers0F140CED4538DA__0.703
2002-01-02T00:00:00ANONYMOUSv4_computers07B39A149025A7040.703


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T13:09:31alpertronManual testing
56237020895499125479400857
F03D15CA9B32E8__no
2018-01-19T08:27:47kkmrkkblmbrbkc4.xlarge
56237020895499125479400857
F03D15CA9B32E8__no


P-1 factor-bounds graph:
B1 = 1500000, B2 = 45000000 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 60000, B2 = 1065000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 25000, B2 = 162500 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
267
266
265
264
263
262
261
250
260
270
280
290
2100
Last modified: 2018-01-19T08:27:47+00:00