is 2 9199727 - 1
has 2769394 decimal digits
takes 2.543 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L77808D00A6F581EBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.229964.1791%17000037400000.14614.1099%3.375965.6513%1.4722%
PrimeNet2640.386962.5000%4000010000000.03703.4089%0.423963.7784%1.2784%
GPU722686.479064.7059%6000013000000.05112.4083%6.530165.5559%0.8500%
Difference-1-3.2491-0.5268%+110000+2440000+0.0950+1.7017%-3.1542+0.0955%+0.0955%

Known prime factors (1 factor, 66.5 bits, 0.00072296% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
91997271051040082715036833592166.5105712343870177
7 × 157 × 487 × 10673029
2014-05-23487106730291.82930.23320.4353

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-04-10T00:00:00ANONYMOUSv4_computers40000280000---0.021--1.649%
2012-06-28T12:03:00Squeeky_SquirrelT7500_22001700003740000---0.146--4.110%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-14T00:00:00ANONYMOUSv4_computers21255--0.001--
1999-05-30T00:00:00Phillip Remakerv4_computers21264--0.387--
2013-09-14T00:34:00NesowaManual testing264265--0.406--


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)
2000-06-23T00:00:00Phantomasv4_computers77808D00A6F581EB2.543
2003-09-21T00:00:00ANONYMOUSv4_computers77808D00A6F581EB2.543


PRP results:
dateuseridcompidcofactorsres64PRP
2019-07-26T05:42:03Niels_Mache_NextcloudSuperDry-X
105104008271503683359
CEB07AB90BB31E__no
2020-11-01T00:33:30kutensdeneb-b
105104008271503683359
CEB07AB90BB31EB3no


P-1 factor-bounds graph:
B1 = 170000, B2 = 3740000 (P-1 stage 2)
B1 = 170000 (P-1 stage 1)
B1 = 40000, B2 = 280000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
265
264
255
250
260
270
280
290
2100
Last modified: 2020-11-01T00:33:30+00:00