is 2 1759271 - 1
has 529594 decimal digits
takes 0.095 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.889968.6567%500000150000000.10155.0446%16.991470.2378%1.5811%
PrimeNet2570.010963.1579%80001400000.00122.8053%0.012164.1914%1.0335%
GPU722610.174665.5738%80001100000.00111.4142%0.175766.0606%0.4869%
Difference+6+16.7153+3.0829%+492000+14890000+0.1004+3.6303%+16.8157+4.1772%+4.1772%

Known prime factors (4 factors, 163.2 bits, 0.00927524% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
175927114074169823.7474
22
-446.358e-133.146e-76.404e-7
175927127022402571031.332768
28 × 3
2008-07-152562561.896e-102.014e-54.098e-5
17592711304147592311236.92437065
3 × 5 × 7 × 353
2008-07-1573535.322e-92.034e-62.852e-6
175927126641682147464691414572271.174757179597329368
23 × 61 × 1551597535511
2020-05-25611551597535511442.866,649.812,420

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1759271380317860556214331755.078
175927118354793615114040391960.671
17592713524120125009705623672168.256
175927149599062215687723587781980232892.002
1759271374959536987700988501507242332994.921
1759271719922260130772996265333303444931102.506
175927134744685627704387679048593553956733108.098
175927110132307555942461250074669754011804788139126.252
1759271489002577376182634236447664890697214482340131.845
175927193888488219992110881859904960732496374871942139.430
17592711321402450362678147218035336741287517771834473951150163.177
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:30:08alpertronManual testing5000001500000012-
skipped known factor: 14074169
skipped known factor: 2702240257
skipped known factor: 130414759231
--0.101--5.045%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:46:00J FeitsmaManual testing??36.924121.18266e-100.2052.53837e-10
2008-07-15T07:46:00J FeitsmaManual testing??31.332102.70321e-110.2055.80199e-11


ECM factoring results:

Old Calculation Method

Total ECM effort:23.106 GHz-days
DigitsB1CurvesCompleteFacMiss
2011000336 / 1003.3603.415%
2550000336 / 2801.20030.055%

New Calculation Method

Total ECM effort:23.106 GHz-days
DigitsB1CompleteFacMiss
201100010.8390.002%
25500000.98037.546%
302500000.06094.146%
3510000000.00399.724%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025117.26
500005000000855.845


Lucas-Lehmer results:
No L-L results for M1759271


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T08:58:17Oliver KruseGTX-3
14074169
2702240257
130414759231
35AD7B5536F050__no
2017-11-03T23:48:56ATHec2-1xf
14074169
2702240257
130414759231
35AD7B5536F050__no
2020-05-27T17:24:00Luigi Morelli9800X
14074169
2702240257
130414759231
2664168214746469141457
9B1767F18626B6FEno
2020-05-29T19:09:18arnaudstm-11-010
14074169
2702240257
130414759231
2664168214746469141457
9B1767F18626B6FEno


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
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109
1010
1011
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1013
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2020-08-21T10:53:56+00:00