is 2 480533 - 1
has 144655 decimal digits
takes 0.006 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L304913C891F54B06double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26761.835371.6418%100000004000000000.53379.6999%62.369074.3925%2.7507%
PrimeNet2400.000052.5000%45001600000.000218.6839%0.000261.3749%8.8749%
GPU722440.000056.8182%80002600000.000413.9535%0.000462.8436%6.0254%
Difference+23+61.8353+14.8236%+9992000+399740000+0.5333-4.2536%+62.3686+11.5489%+11.5489%

Known prime factors (1 factor, 93.0 bits, 0.01934399% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
48053395945829393360171557764553512892.9549983271637261142476975
52 × 476167 × 838636162292737
2013-11-294761678386361622927373.386e+9780,3041,457,391

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-07T00:00:00Alex Kruppav4_computers1000004000000---0.005--2.482%
2002-06-23T00:00:00ANONYMOUSv4_computers327683276800---0.004--1.745%
2002-09-22T00:00:00ANONYMOUSv4_computers655366553600---0.007--2.479%
2003-04-27T00:00:00ANONYMOUSv4_computers13107213107200---0.014--3.341%
2010-11-09T22:25:00Jocelyn LaroucheManual testing300000300000---0.005--1.280%
2010-11-11T22:25:00Jocelyn LaroucheManual testing500000500000---0.009--1.629%
2010-11-13T20:25:00Rob_Deetwopc5000001000000---0.009--2.151%
2010-11-14T20:54:00Rob_Deetwopc10000002000000---0.018--2.805%
2012-10-02T00:24:00markrManual testing10000000400000000---0.534--9.700%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-04-27T00:00:00ANONYMOUSv4_computers21254--0.005--
2022-03-07T07:41:31LordJuliusManual testing254255--0.005--
2001-03-25T00:00:00ANONYMOUSv4_computers21256--0.020--
2002-01-22T00:00:00ANONYMOUSv4_computers21257--0.040--
2003-12-31T00:00:00ANONYMOUSv4_computers21258--0.080--
2022-03-07T07:41:31LordJuliusManual testing258260--0.240--
2012-12-30T04:00:00Sid & AndyBuzz260261--0.320--


ECM factoring results:

Old Calculation Method

Total ECM effort:12.905 GHz-days
Estimated T-Level:26.125
DigitsB1CurvesCompleteFacMiss
2011000422 / 1004.2201.439%
2550000422 / 2801.50722.095%
30250000144 / 6400.22579.838%

New Calculation Method

Total ECM effort:12.905 GHz-days
Estimated T-Level:26.125
DigitsB1CompleteFacMiss
201100020.9680.000%
25500002.5457.844%
302500000.23778.886%
3510000000.01898.229%
4030000000.00199.887%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002783.595
250000250000001449.311


Lucas-Lehmer results:
No L-L results for M480533


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-26T13:39:03Oliver KruseDoppelherz
9594582939336017155776455351
7207526BB3CDCC__no
2017-09-27T07:35:58Oliver KruseManual testing
9594582939336017155776455351
7207526BB3CDCC__no
2017-11-09T06:47:48kkmrkkblmbrbkc4.large
9594582939336017155776455351
7207526BB3CDCC__no
2020-04-18T21:39:14Oliver KruseAddPrpType5
9594582939336017155776455351
2CF16CC6E638FB__no


P-1 factor-bounds graph:
B1 = 10000000, B2 = 400000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 1000000, B2 = 2000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 500000, B2 = 1000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-07T07:41:31+00:00