is 2 23196487 - 1
has 6982839 decimal digits
takes 17.627 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L4D1F482A9621D118double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27120.609964.7887 %800000200000002.03415.2106 %22.644066.6235 %
Target2695.146863.7681 %170000250000001.67793.9955 %6.824765.2158 %
Difference+2+15.4632+1.0206 %+630000-5000000+0.3562+1.2152%+15.8194+1.4077 %

Known prime factors (1 factor, 72.0 bits, 0.00031060% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2319648748817011144271553540572272.048105225009166844
22 × 7 × 113 × 21163 × 1571467
2021-03-2521163157146746.9750.11640.1762

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2005-04-11S00030v4_computers330000330000--0.3641.935%
2021-03-25yoyorocks18000002000000022272.0482.0346.259%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-09-10Net_Forcev4_computers212560.000
2003-12-31ComputerraRUv4_computers212580.002
2004-10-18EPFv4_computers212670.644
2016-10-23VictordeHollanderManual testing2672681.289
2017-09-01ramgeisManual testing2682707.732
2021-03-21yoyorocks1Manual testing27027110.31


ECM factoring results:
No ECM results for M23196487


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-05-28S00030v4_computers4D1F482A9621D11817.63
2010-02-15Sturle Sundehaydn.ifi4D1F482A9621D11818.81


PRP results:
No PRP results for M23196487


CERT results:
No CERT results for M23196487


P-1 factor-bounds graph:
B1 = 800000, B2 = 20000000 (P-1 stage 2)
B1 = 800000 (P-1 stage 1)
B1 = 330000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
271
270
268
267
258
256
this exponent TF target: 69
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00