is 2 52777031 - 1
has 15887470 decimal digits
takes 101.107 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
Actual2692.262162.3188%----2.262162.3188%
Target27336.243964.3836%3600009600000015.47453.9095%51.718465.7760%
Difference-4-33.9818-2.0647%-360000-96000000-15.4745-3.9095%-49.4563-3.4571%

Known prime factors (1 factor, 68.5 bits, 0.00012980% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
527770314183830387939435689992168.5033963684872629
3169 × 8627 × 144983		2011-04-0486271449831.83280.04460.0488

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-04-04BruceTIGGER2168.503-202.2-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01ANONYMOUSv4_computers21253--2.27357e-5--
2000-01-04ANONYMOUSv4_computers21253--2.27357e-5--
2000-02-23ANONYMOUSv4_computers21254--4.54714e-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--
2008-05-21ANONYMOUSv4_computers21263--0.030--
2008-11-13DerekManual testing21264--0.067--
2008-12-12ANONYMOUSC806C7C23264265--0.071--
2008-12-13ANONYMOUSC806C7C23265266--0.142--
2008-12-14ANONYMOUSC806C7C23266267--0.283--
2009-05-08Lars Frickehupepc1267268--0.566--
2010-03-28sannerud.comJimEmcLap268269--1.133--


ECM factoring results:
No ECM results for M52777031


Lucas-Lehmer results:
No L-L results for M52777031


PRP results:
No PRP results for M52777031


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
TF factor-bounds graph:
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