is 2 3283517 - 1
has 988438 decimal digits
takes 0.345 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8FE1B5364464E189double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26818.152867.6471 %10000001199121001.13897.5274 %19.291770.0824 %
Target2641.084065.6250 %1700014000000.01411.6876 %1.098166.2051 %
Difference+4+17.0688+2.0221 %+983000+118512100+1.1249+5.8397%+18.1936+3.8773 %

Known prime factors (1 factor, 62.0 bits, 0.00188826% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
328351746160587255051757691962.001702913785052
22 × 175728446263
2009-05-2341757284462630.18711,458.12,723.2

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-12-25JossManual testing109450109450---1.579%
2021-01-02JossManual testing32835132835176---5.147%
2022-01-25JossManual testing1000000119912100--1.13910.498%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-08-31David Campeauv4_computers212600.023
2009-04-02S485122USB-Z2602610.047
2022-04-06LordJuliusManual testing21262
2022-04-06LordJuliusManual testing263264
2022-04-06LordJuliusManual testing264265
2022-04-06LordJuliusManual testing265266
2022-04-06LordJuliusManual testing266267
2021-04-15JossManual testing267268


ECM factoring results:
Total ECM effort:0.299 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.299


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-16ANONYMOUSv4_computers8FE1B5364464E1890.345
1999-09-22ANONYMOUSv4_computers8FE1B5364464E1890.345


PRP results:
dateuseridcompidcofactorsres64
2017-11-03Oliver KruseGTX-2
4616058725505175769
CCEF949A1A38FABD
2017-12-14kkmrkkblmbrbkc4.xlarge
4616058725505175769
CCEF949A1A38FABD


CERT results:
No CERT results for M3283517


P-1 factor-bounds graph:
B1 = 1000000, B2 = 119912100 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 328351, B2 = 3283517 (P-1 stage 2)
B1 = 328351 (P-1 stage 1)
B1 = 109450 (P-1 stage 1)
100
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105
106
100
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106
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109
1010
1011
1012
TF factor-bounds graph:
268
267
266
265
264
262
261
260
this exponent TF target: 64
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-03T02:29:32+00:00