is 2 4322119 - 1
has 1301088 decimal digits
takes 0.539 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L87104F2EA06DF910double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.874865.6716%250003437500.00771.3651%6.882566.1403%0.4686%
PrimeNet2610.071162.2951%180003600000.00662.9284%0.077763.3992%1.1042%
GPU722651.688064.6154%240005000000.00901.9835%1.697065.3173%0.7019%
Difference+2+5.1869+1.0563%+1000-156250-0.0014-0.6185%+5.1855+0.8230%+0.8230%

Known prime factors (1 factor, 70.4 bits, 0.00162790% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
432211915149994128196561051432270.360175261187026509
3 × 58420395675503
2009-12-1635842039567550366.890575,6191,075,097

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-08-01T05:09:00Carsten Kossendeydurandal25000343750---0.008--1.365%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-01-28T00:00:00ANONYMOUSv4_computers21261--0.071--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-15T00:00:00ANONYMOUSv4_computers87104F2EA06DF9100.539


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:14:28kkmrkkblmbrbkManual testing
1514999412819656105143
9FA70F112288DB__no
2018-01-31T16:49:46Oliver KruseGTX-4
1514999412819656105143
9FA70F112288DB__no


P-1 factor-bounds graph:
B1 = 25000, B2 = 343750 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2018-01-31T16:49:46+00:00