is 2 67001843 - 1
has 20169565 decimal digits
takes 169.366 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
Actual2717.135363.3803%725000161312505.73395.6037%12.869265.4324%2.0521%
PrimeNet2703.566362.8571%280000130000003.56645.3189%7.132764.8327%1.9756%
GPU7227457.100964.8649%450000150000004.55493.9284%61.655866.2451%1.3802%
Difference-3-49.9656-1.4846%+275000+1131250+1.1789+1.6753%-48.7867-0.8128%-0.8128%

Known prime factors (1 factor, 81.4 bits, 0.00012152% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6700184332334758445264076890888972581.41924129753001916736
26 × 3 × 2531 × 3307 × 15014999
2013-08-073307150149998,315.53.00995.6002

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-08-07T20:04:00Jwb52zClay725000161312502581.4195.734338.711.475.604%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23T00:00:00ANONYMOUSv4_computers21253--1.79088e-5--
2002-09-14T00:00:00Jocelyn Larouchev4_computers21260--0.002--
2008-12-10T23:01:00Wojciech FlorekManual testing21264--0.053--
2009-04-02T10:26:00ANONYMOUS4264265--0.056--
2010-03-14T09:45:00korvacbd3k265266--0.112--
2010-03-16T13:18:00korvacbd3k266267--0.223--
2010-03-19T02:49:00paulieiMac3.4267268--0.446--
2010-04-03T19:52:00Sturle Sundegibys.ifi268269--0.892--
2012-02-19T15:55:00dsls3269270--1.784--
2012-07-17T04:02:00symalladold_laptop270271--3.569--


ECM factoring results:
No ECM results for M67001843


Lucas-Lehmer results:
No L-L results for M67001843


PRP results:
No PRP results for M67001843


P-1 factor-bounds graph:
B1 = 725000, B2 = 16131250 (P-1 stage 2)
B1 = 725000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
271
270
269
268
267
266
265
264
260
253
250
260
270
280
290
2100
Last modified: 2013-08-07T20:04:42+00:00