is 2 52806697 - 1
has 15896400 decimal digits
takes 101.164 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2704.525062.8571%8600008600002.38892.8541%6.913963.9172%
Target27336.223564.3836%3600009600000015.47453.9098%51.698065.7761%
Difference-3-31.6985-1.5264%+500000-95140000-13.0856-1.0557%-44.7841-1.8588%

Known prime factors (1 factor, 68.5 bits, 0.00012972% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
528066974179400792248328093212168.5023957263973780
22 × 3 × 5 × 13 × 4673 × 1085687		2015-01-22467310856871.89330.17660.3069

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-06-09HobgoblinSL2x170za860000860000---2.389--2.854%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01ANONYMOUSv4_computers21253--2.27229e-5--
2000-01-04ANONYMOUSv4_computers21253--2.27229e-5--
2000-02-23ANONYMOUSv4_computers21254--4.54459e-5--
2000-05-10ANONYMOUSv4_computers21256--0.000--
2001-07-07ANONYMOUSv4_computers21257--0.000--
2002-05-25ANONYMOUSv4_computers21258--0.001--
2003-12-131997rj7v4_computers21259--0.001--
2004-03-261997rj7v4_computers21260--0.003--
2008-06-02ANONYMOUSv4_computers21263--0.030--
2008-11-17DerekManual testing21264--0.067--
2008-12-13W. OleinikPentium_III264265--0.071--
2008-12-14tmorrowMoo3265266--0.142--
2008-12-15tmorrowMoo3266267--0.283--
2009-04-30dmbleess2008desktop267268--0.566--
2010-03-28sannerud.comJimEmcLap268269--1.132--
2015-01-22Mark RoseManual testing268269*68.502210.765239.11.807
2014-10-11NesowaManual testing269270--2.264--


ECM factoring results:
No ECM results for M52806697


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2011-07-18HobgoblinSL2x170za323A514440F661__101.2


PRP results:
No PRP results for M52806697


P-1 factor-bounds graph:
B1 = 860000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
TF factor-bounds graph:
270
269
268
267
266
265
264
263
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00