is 2 1763147 - 1
has 530761 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
Actual26716.852868.6567%500000150000000.10155.0459%16.954270.2383%1.5815%
PrimeNet2570.010963.1579%80001400000.00122.8064%0.012164.1918%1.0340%
GPU722610.174265.5738%80001200000.00111.4532%0.175366.0740%0.5003%
Difference+6+16.6786+3.0829%+492000+14880000+0.1004+3.5927%+16.7789+4.1642%+4.1642%

Known prime factors (4 factors, 217.3 bits, 0.01232554% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
176314731736647824.9209
32
-991.270e-127.080e-71.441e-6
17631472536710114791237.88471937
32 × 7993
2008-07-15979931.631e-83.493e-56.401e-5
1763147187231871307512635132064.0215309593338148
22 × 11 × 275917 × 437351
2015-06-012759174373512.66460.02240.0442
176314717411302256421590354429084332890.492493756398542537586328
23 × 1279 × 48256098372022829
2020-06-14127948256098372022829252,044,420206,813,574386,270,162

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
176314780506673454419709131962.804
17631475942111806835956949160609112788.941
1763147474952981756826884049997686572731101.906
17631475525763535223554962571207359144415135115.412
176314715073415123613854659204706929574419736939126.825
176314744167426545530598482618159295668890240739128.376
17631471401726025173934031741588157356412198450840932947153.296
17631473259950703370531564772428810038559819031290512947154.514
176314710345990471027227047354020847682382936497994896235
62463
55179.433
176314782695499229568023655771862069400181828611465835803
96975791
58192.398
176314726244778675375723292508810990292430724304565913834
7054940546512777
66217.317
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-06-01T11:23:00alpertronManual testing50000015000000122064.0210.0390.1910.0795.046%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:46:00J FeitsmaManual testing??37.884125.92725e-90.2051.27184e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:24.350 GHz-days
DigitsB1CurvesCompleteFacMiss
2011000354 / 1003.5402.850%
2550000354 / 2801.26428.180%

New Calculation Method

Total ECM effort:24.350 GHz-days
DigitsB1CompleteFacMiss
201100011.4190.001%
25500001.03235.627%
302500000.06493.842%
3510000000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025117.27
5000050000001037.085


Lucas-Lehmer results:
No L-L results for M1763147


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T09:59:09Oliver KruseGTX-2
31736647
253671011479
18723187130751263513
25DE92BF5C830A1Dno
2017-10-05T21:32:29Oliver KruseManual testing
31736647
253671011479
18723187130751263513
25DE92BF5C830A__no
2017-11-10T21:23:29kkmrkkblmbrbkc4.xlarge
31736647
253671011479
18723187130751263513
25DE92BF5C830A__no
2020-06-15T11:23:19LaurV3tits
31736647
253671011479
18723187130751263513
1741130225642159035442908433
659C4FF431EAA4EAno
2020-06-16T16:32:01Luigi Morelli9800X
31736647
253671011479
18723187130751263513
1741130225642159035442908433
659C4FF431EAA4EAno


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
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1017
TF factor-bounds graph:
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2
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2100
Last modified: 2020-08-14T09:32:48+00:00