is 2 1767043 - 1
has 531933 decimal digits
takes 0.096 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
Actual26716.815668.6567%500000150000000.10155.0472%16.917170.2387%1.5820%
PrimeNet2570.010963.1579%80001400000.00122.8076%0.012164.1923%1.0344%
GPU722610.173865.5738%80001200000.00111.4539%0.174966.0743%0.5005%
Difference+6+16.6418+3.0829%+492000+14880000+0.1004+3.5934%+16.7421+4.1644%+4.1644%

Known prime factors (3 factors, 156.0 bits, 0.00882973% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1767043248516927531134.5337032
23 × 3 × 293
-82931.971e-91.851e-62.371e-6
1767043205868567216091444.2275825228
22 × 89 × 16363
2008-09-3089163632.483e-67.675e-50.0001
17670431816816260230679568293432477.26651408377165430597
3 × 13 × 1483 × 1627 × 546311803
2019-08-14162754631180331,4832.34154.3730

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
17670435116182379954597237995772478.759
1767043451509594879073415356230029085127934111.798
1767043374025360388584917833994617527337288737121.493
17670439295163338207209066460184493445134876972458791147156.025
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:30:50alpertronManual testing5000001500000012-
skipped known factor: 24851692753
skipped known factor: 20586856721609
--0.101--5.047%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-30T13:30:00markrManual testing??44.227141.15634e-60.2062.48052e-6


ECM factoring results:

Old Calculation Method

Total ECM effort:17.682 GHz-days
Estimated T-Level:24.589
DigitsB1CurvesCompleteFacMiss
2011000257 / 1002.5707.555%
2550000257 / 2800.91839.872%

New Calculation Method

Total ECM effort:17.682 GHz-days
Estimated T-Level:24.589
DigitsB1CompleteFacMiss
20110008.2900.025%
25500000.74947.271%
302500000.04695.491%
3510000000.00299.789%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025617.61
50000500000010.069


Lucas-Lehmer results:
No L-L results for M1767043


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T10:51:38Oliver KruseGTX-0
24851692753
20586856721609
28B6AA1010B3ED__no
2017-11-04T10:04:20kkmrkkblmbrbkold
24851692753
20586856721609
28B6AA1010B3ED__no
2019-08-15T13:46:38Niels_Mache_NextcloudSuperDry-X
24851692753
20586856721609
181681626023067956829343
B7B33A228CDBA64Eno
2019-08-16T06:50:53marssystemssystem11
24851692753
20586856721609
181681626023067956829343
B7B33A228CDBA64Eno


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
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2020-08-21T10:55:10+00:00