is 2 52562327 - 1
has 15822838 decimal digits
takes 100.696 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
Actual27218.194363.8889%515000108150002.98944.4245%21.183765.4866%
Target27336.391964.3836%3600009600000015.47453.9075%51.866465.7753%
Difference-1-18.1976-0.4947%+155000-85185000-12.4851+0.5170%-30.6827-0.2886%

Known prime factors (1 factor, 68.0 bits, 0.00012939% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
525623272969389174747003201212168.0092824636335780
22 × 3 × 5 × 7 × 6725324609		2015-01-22767253246091.44421,017.81,901.0

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-04-07ktonypod6451500010815000---2.989--4.424%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01ANONYMOUSv4_computers21253--2.28286e-5--
2000-01-04ANONYMOUSv4_computers21253--2.28286e-5--
2000-02-23ANONYMOUSv4_computers21254--4.56572e-5--
2000-05-10ANONYMOUSv4_computers21256--0.000--
2001-06-30ANONYMOUSv4_computers21257--0.000--
2002-05-11ANONYMOUSv4_computers21258--0.001--
2003-12-021997rj7v4_computers21259--0.001--
2004-03-081997rj7v4_computers21260--0.003--
2007-11-17ANONYMOUSv4_computers21263--0.030--
2008-11-18DerekManual testing21264--0.068--
2008-12-09Sturle Sundeeames.ifi264265--0.071--
2008-12-10sasaki3value1991265266--0.142--
2008-12-11Son Johansonjohandesktop266267--0.284--
2009-04-22Sturle Sundegofy.ifi267268--0.569--
2010-03-26sannerud.comJimEmcLap268269--1.137--
2015-01-22Mark RoseManual testing268269*68.009210.310238.30.734
2011-11-08Ethan O'ConnorManual testing269270--2.275--
2011-12-06XyzzyManual testing270271--4.549--
2011-12-06XyzzyManual testing271272--9.099--


ECM factoring results:
No ECM results for M52562327


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-05-03David Barleyeng15ED9F309B01DDF0__100.7


PRP results:
No PRP results for M52562327


P-1 factor-bounds graph:
B1 = 515000, B2 = 10815000 (P-1 stage 2)
B1 = 515000 (P-1 stage 1)
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1010
TF factor-bounds graph:
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this exponent TF target: 73
TF double-checked to: 67.8
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Last modified: 2023-06-05T21:50:05+00:00