is 2 72684683 - 1
has 21880270 decimal digits
takes 194.331 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
Actual275105.275464.0000%6200006200002.40361.4956%107.679064.5384%0.5384%
PrimeNet2703.287561.4286%320000140000004.13005.5364%7.417563.5640%2.1355%
GPU7227452.636563.5135%500000170000005.42344.1223%58.059965.0176%1.5041%
Difference+1+52.6389+0.4865%+120000-16380000-3.0198-2.6268%+49.6191-0.4792%-0.4792%

Known prime factors (1 factor, 85.4 bits, 0.00011754% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
72684683522026163249300979227688632685.432359103281257552557
3 × 11 × 37 × 13807 × 42157 × 505283
2015-08-2642157505283130,1350.26130.3326

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-08-26T16:55:00Jwb52zClay6200006200002685.4322.404388.74.8071.496%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-06-02T00:00:00Jocelyn Larouchev4_computers21257--0.000--
2008-09-19T11:27:00Wojciech FlorekManual testing21264--0.049--
2010-05-25T16:13:00ANONYMOUSSrvrUID264265--0.051--
2010-06-05T13:09:00ANONYMOUSSrvrUID265266--0.103--
2010-06-12T21:58:00Aviatorr266267--0.206--
2010-06-15T12:07:00Aviatorr267268--0.411--
2010-06-18T04:07:00GrunwalderGIMPcompute-head268269--0.822--
2012-12-14T11:50:00albin_pouillesprod-1269270--1.645--
2013-04-20T01:17:00SMoffatManual testing270271--3.290--
2015-03-11T10:22:00srow7Manual testing271272--6.580--
2015-08-22T19:10:00FredrikManual testing272273--13.16--
2015-08-25T02:50:00NickOfTimeManual testing273274--26.32--
2015-08-25T02:50:00NickOfTimeManual testing274275--52.64--


ECM factoring results:
No ECM results for M72684683


Lucas-Lehmer results:
No L-L results for M72684683


PRP results:
No PRP results for M72684683


P-1 factor-bounds graph:
B1 = 620000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
257
250
260
270
280
290
2100
Last modified: 2015-08-26T16:55:00+00:00