is 2 3039163 - 1
has 914880 decimal digits
takes 0.259 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8CEC2E0B0EFB07D2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26819.612367.6471%30000001000000001.02248.0322%20.634770.2457%2.5986%
PrimeNet2600.050563.3333%120002200000.00292.5211%0.053464.2578%0.9244%
GPU722641.171265.6250%130002200000.00301.4300%1.174266.1165%0.4915%
Difference+4+18.4411+2.0221%+2987000+99780000+1.0194+6.6022%+19.4606+4.1292%+4.1292%

Known prime factors (1 factor, 94.7 bits, 0.00311643% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3039163324764475957905544762577208812994.7135342992066531238119880
23 × 5 × 11 × 41 × 641 × 3719 × 8867 × 14011579
2017-08-048867140115792.012e+90.09520.1760

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-13T00:00:00Team Prime Ribv4_computers15000217500---0.003--0.806%
2003-12-23T00:00:00Team Prime Ribv4_computers1000010000---0.001--0.147%
2004-02-07T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.249%
2010-10-08T05:57:00markrtiny1100002420000---0.029--2.657%
2016-10-10T15:03:06Squeeky_SquirrelP4_260019500053137506---0.058--3.492%
2017-01-04T22:58:49Jocelyn Larouchelow 4M132000132000---0.016--0.999%
2017-07-30T01:23:09Jocelyn Larouchelow 4M39000039000006---0.072--3.584%
2017-08-05T00:20:56mikrMSI3000000100000000122994.7131.0220.5172.0458.032%
2020-09-07T14:32:35Jocelyn LaroucheManual testing42549560783266---0.091--4.001%
2022-01-06T11:34:33Jocelyn LaroucheManual testing1357832116447100-
skipped known factor: 32476447595790554476257720881
--0.941--7.675%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-04-15T00:00:00ANONYMOUSv4_computers21260--0.051--
2009-03-02T00:00:00Jayson Kingv4_computers260261--0.051--
2009-02-13T06:06:00Sturle Sundegoscha.ifi260261--0.051--
2010-10-22T00:43:00Sid & AndyBuzz261262--0.101--
2013-01-07T13:54:00dbaughManual testing262263--0.323--
2015-02-07T18:28:00VictordeHollanderManual testing263264--0.646--
2015-02-07T18:28:00VictordeHollanderManual testing264265--1.229--
2015-06-03T21:52:00ThaManual testing265266--2.459--
2021-02-21T11:36:42Jocelyn LaroucheManual testing265266--2.459--
2021-02-22T09:03:45Jocelyn LaroucheManual testing266267--4.918--
2017-05-05T02:55:06Gordon SpenceManual testing266267--4.918--
2021-04-09T23:45:21Jocelyn LaroucheManual testing267268--9.84--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.397 GHz-days
Estimated T-Level:0.600
DigitsB1CurvesCompleteFacMiss
201100012 / 1000.12088.638%
255000012 / 2800.04395.797%

New Calculation Method

Total ECM effort:1.397 GHz-days
Estimated T-Level:0.600
DigitsB1CompleteFacMiss
20110000.38767.903%
25500000.03596.562%
302500000.00299.785%


ECM Summary

B1B2factorcurvesGHz-days
500005000000121.397


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-06T00:00:00curtiscv4_computers8CEC2E0B0EFB07D20.259


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:11:59alpertronManual testing
32476447595790554476257720881
C11C49FA89A1E7__no
2017-11-17T16:25:00Oliver KruseThreadripper
32476447595790554476257720881
C11C49FA89A1E7__no


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 1357832, B2 = 116447100 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 1357832 (P-1 stage 1)
B1 = 425495, B2 = 6078326 (P-1 stage 2)
B1 = 390000, B2 = 3900000 (P-1 stage 2)
B1 = 195000, B2 = 5313750 (P-1 stage 2)
B1 = 425495 (P-1 stage 1)
B1 = 390000 (P-1 stage 1)
B1 = 110000, B2 = 2420000 (P-1 stage 2)
B1 = 195000 (P-1 stage 1)
B1 = 132000 (P-1 stage 1)
B1 = 110000 (P-1 stage 1)
B1 = 15000, B2 = 217500 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
102
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109
TF factor-bounds graph:
268
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266
265
264
263
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2100
Last modified: 2022-01-06T11:34:33+00:00