is 2 3203731 - 1
has 964420 decimal digits
takes 0.273 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L6C3499FB7150891Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26818.604867.6471%10703721199121000.93127.5632%19.536070.0940%2.4469%
PrimeNet2600.047963.3333%130002400000.00312.6580%0.051164.3079%0.9746%
GPU722641.111065.6250%160002600000.00361.6161%1.114666.1805%0.5555%
Difference+4+17.4938+2.0221%+1054372+119652100+0.9275+5.9471%+18.4214+3.9134%+3.9134%

Known prime factors (1 factor, 78.6 bits, 0.00245209% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
32037314450974161812874746716312478.55869465478871554365
3 × 5 × 62011 × 74680813481
2014-04-23620117468081348135,920502.14937.85

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-12-29T03:27:52Jocelyn LaroucheManual testing32037332037316---0.059--3.368%
2022-01-24T00:02:02Jocelyn LaroucheManual testing1070372119912100---0.931--7.563%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-05-20T00:00:00ANONYMOUSv4_computers21260--0.048--
2009-04-06T11:14:00S485122USB-A260261--0.048--
2011-02-01T00:51:00markrManual testing261262--0.096--
2013-01-03T08:47:00dbaughManual testing262263--0.306--
2022-04-02T23:17:41LordJuliusManual testing263264--0.613--
2022-04-02T23:17:41LordJuliusManual testing264265--1.166--
2022-04-02T23:17:41LordJuliusManual testing265266--2.333--
2022-04-02T23:17:41LordJuliusManual testing266267--4.665--
2021-05-10T11:03:06Jocelyn LaroucheManual testing267268--9.330--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.705 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:0.705 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.19482.403%
25500000.01798.266%
302500000.00199.892%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000060.705


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-30T00:00:00akohlerv4_computers6C3499FB7150891C0.273


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-01T15:34:05Oliver KruseGTX-1
445097416181287474671631
7D467A46FD3528__no
2017-12-13T05:53:03kkmrkkblmbrbkc4.xlarge
445097416181287474671631
7D467A46FD3528__no


P-1 factor-bounds graph:
B1 = 1070372, B2 = 119912100 (P-1 stage 2)
B1 = 1070372 (P-1 stage 1)
B1 = 320373, B2 = 3203731 (P-1 stage 2)
B1 = 320373 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2022-04-02T23:17:41+00:00