is 2 1795247 - 1
has 540424 decimal digits
takes 0.097 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
Actual26716.551468.6567%500000150000000.10155.0569%16.652970.2417%1.5850%
PrimeNet2570.010763.1579%80001400000.00122.8160%0.011964.1954%1.0375%
GPU722610.171165.5738%80001300000.00121.4943%0.172366.0882%0.5144%
Difference+6+16.3803+3.0829%+492000+14870000+0.1003+3.5626%+16.4807+4.1535%+4.1535%

Known prime factors (5 factors, 278.3 bits, 0.01550011% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1795247663128336871135.94918469
11 × 23 × 73
-23735.093e-92.024e-63.682e-6
1795247187914115037167671754.0615233656289
5233656289
2014-10-30152336562890.001422.43041.893
179524720436320653692826811960.826569178521220
22 × 3 × 5 × 59 × 709 × 226777
2015-06-307092267770.09560.00100.0018
179524730005526428783397111961.380835693540465
5 × 7 × 35407 × 674357
2015-06-30354076743570.29430.00550.0057
1795247763913168621551428172066.05021275990674864
24 × 1693 × 785439703
2017-12-14169378543970314.6133.36636.2871

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
179524712461117457899485524243299292890.009
17952471355190332682535546636424748473096.774
17952471989751483762796462302306444573097.329
1795247506572469021101269001545367627931101.999
17952473840273110254479453920062418241232735114.887
17952475638461945089178099100507455263433735115.441
1795247143550067046757479111531797920251263937120.111
1795247613202559481472105180618206030684519137122.206
179524715611574465528542516145278568239965237739126.876
179524722921616770369629076905144749304750588739127.430
1795247254659392072963510274559679333489899080965964946150.835
1795247373902389215177193669174755178187671720651051946151.389
17952479519211721829327964946384639297714552252246999347156.060
179524740663199343337584668772106192357082933843874921748158.154
17952471035247741124810154424650370025982295114261522399950162.824
17952471519997360730671282492690196435307234667478441536950163.379
179524711522941630348699991616551165870225212861758858001
7497
54176.267
179524729336352000266399220765044774003375611555756442663
05159
55180.937
179524743072953306251101588524613660653141135156811998131
07329
55181.491
179524746843351022033671977536362759640661795611277848931
4643047
57188.256
179524776411891191832197436072665173887819516573598847296
90770111021439
64212.215
179524719453766311769555112209388110015943481056887923097
9369146757091233
66216.885
179524728562895890053460771003742133848200038897920626971
9201790657792023
66217.439
179524731063153456658803623602812236749515615349854544977
393030989481924289
68224.204
179524788025268526808611823401557372461516233872175972019
47233839185358393869049
73242.317
179524758372049920717749767245692886568292398246162012493
2483470127597174738127686793853663
84278.265
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-06-30T15:00:00alpertronManual testing500000150000001237122.2060.1010.1950.2035.057%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-10-30T12:18:00TJAOIManual testing254255*54.061174.88994e-50.2060.000


ECM factoring results:

Old Calculation Method

Total ECM effort:17.782 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:17.782 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.3230.024%
25500000.75247.133%
302500000.04695.474%
3510000000.00299.788%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025517.57
50000500000030.207


Lucas-Lehmer results:
No L-L results for M1795247


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T17:29:50Oliver KruseGTX-0
66312833687
18791411503716767
2043632065369282681
3000552642878339711
A0FEE4019415AD4Cno
2017-10-05T21:07:14Oliver KruseManual testing
66312833687
18791411503716767
2043632065369282681
3000552642878339711
A0FEE4019415AD__no
2017-11-11T03:12:38kkmrkkblmbrbkc4.xlarge
66312833687
18791411503716767
2043632065369282681
3000552642878339711
A0FEE4019415AD__no
2017-12-16T22:24:04Oliver KruseThreadripper
66312833687
18791411503716767
2043632065369282681
3000552642878339711
76391316862155142817
058FAB29B19BCD__no
2017-12-18T03:30:18kkmrkkblmbrbkold
66312833687
18791411503716767
2043632065369282681
3000552642878339711
76391316862155142817
058FAB29B19BCD__no


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
107
108
109
1010
TF factor-bounds graph:
267
255
230
240
250
260
270
280
290
2100
Last modified: 2021-01-01T10:32:30+00:00