is 2 10552519 - 1
has 3176625 decimal digits
takes 3.447 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LAC7BAB0C74FFA7C6double-checked
PRP25282E08B5EF06__
unverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.815864.1791%15500030000000.14683.9427%2.962765.5914%1.4123%
PrimeNet2640.337362.5000%4500013000000.05373.7751%0.391063.9157%1.4157%
GPU722685.648464.7059%7000017000000.07522.7069%5.723665.6613%0.9554%
Difference-1-2.8326-0.5268%+85000+1300000+0.0716+1.2357%-2.7610-0.0699%-0.0699%

Known prime factors (1 factor, 70.5 bits, 0.00066854% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1055251917263737830819887157692270.54881799131708836
22 × 61 × 1123 × 298523903		2016-11-26112329852390341.1657.704414.389

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-06-23T00:00:00ANONYMOUSv4_computers1200001500000---0.092--3.242%
2000-11-15T00:00:00ANONYMOUSv4_computers155000155000---0.073--1.542%
2001-10-13T00:00:00ANONYMOUSv4_computers1200001500000---0.092--3.242%
2001-11-24T00:00:00ANONYMOUSv4_computers1250002062500---0.109--3.515%
2002-05-05T00:00:00ANONYMOUSv4_computers155000155000---0.073--1.542%
2013-01-06T08:30:00NesowaOutback1550003000000---0.147--3.943%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-07T00:00:00ANONYMOUSv4_computers21264--0.337--
2013-12-18T00:30:00lycornManual testing264265--0.354--
2015-05-07T16:24:00ThaManual testing265266--0.708--
2015-11-14T12:38:53VictordeHollanderManual testing266267--1.416--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.993 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.993 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.497
50000500000010.497


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-11-24T00:00:00ANONYMOUSv4_computersAC7BAB0C74FFA7C63.447
2004-03-08T00:00:00Houndv4_computersAC7BAB0C74FFA7C63.447
2004-08-04T00:00:00Houndv4_computersAC7BAB0C74FFA7C63.447


PRP results:
dateuseridcompidcofactorsres64PRP
2020-10-05T13:22:26tottenhoff3-of-4-Ryzen-5-3600
1726373783081988715769
25282E08B5EF06__no
2021-03-09T22:26:41XZTM900Tiny2
1726373783081988715769
25282E08B5EF062Eno


P-1 factor-bounds graph:
B1 = 155000, B2 = 3000000 (P-1 stage 2)
B1 = 125000, B2 = 2062500 (P-1 stage 2)
B1 = 120000, B2 = 1500000 (P-1 stage 2)
B1 = 155000 (P-1 stage 1)
B1 = 125000 (P-1 stage 1)
B1 = 120000 (P-1 stage 1)
102
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106
102
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105
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109
TF factor-bounds graph:
267
266
265
264
250
260
270
280
290
2100
Last modified: 2021-03-09T22:26:41+00:00