is 2 69408289 - 1
has 20893977 decimal digits
takes 185.571 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27213.778462.5000%705000146287505.67405.0201%19.452464.3825%1.8825%
PrimeNet2703.442761.4286%300000130000003.84555.3896%7.288163.5074%2.0788%
GPU7227455.121263.5135%450000160000005.02893.9946%60.150164.9710%1.4575%
Difference-2-41.3428-1.0135%+255000-1371250+0.6451+1.0255%-40.6977-0.5885%-0.5885%

Known prime factors (1 factor, 76.6 bits, 0.00011043% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
694082891182149615837703826503132476.646851591094428004
22 × 3 × 7 × 41 × 89 × 907 × 3063167
2014-01-189073063167224.500.65031.2084

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2014-01-18T13:33:00Jwb52zClay705000146287502476.6465.674371.111.355.020%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-09-23T00:00:00Jocelyn Larouchev4_computers21252--8.64395e-6--
2000-10-22T00:00:00Jocelyn Larouchev4_computers21254--3.45758e-5--
2000-11-05T00:00:00Jocelyn Larouchev4_computers21256--0.000--
2003-12-31T00:00:00ANONYMOUSv4_computers21262--0.009--
2004-11-22T00:00:00ANONYMOUSv4_computers21264--0.051--
2010-02-15T16:44:00ITSTV264265--0.054--
2010-04-20T09:40:00ANONYMOUSilsshtpc01265266--0.108--
2010-04-21T02:34:00GrunwalderGIMPcompute-0-1266267--0.215--
2010-06-23T18:04:00Charles A. Morrismagnetar267268--0.431--
2010-06-29T11:33:00ANONYMOUSGIS268269--0.861--
2012-04-26T01:09:00evatutinvtdc269270--1.723--
2012-11-21T22:37:00igManual testing270271--3.445--
2013-12-31T14:51:00garoManual testing271272--6.890--


ECM factoring results:
No ECM results for M69408289


Lucas-Lehmer results:
No L-L results for M69408289


PRP results:
No PRP results for M69408289


P-1 factor-bounds graph:
B1 = 705000, B2 = 14628750 (P-1 stage 2)
B1 = 705000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2014-01-18T13:33:26+00:00