is 2 81309119 - 1
has 24476484 decimal digits
takes 253.724 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
Actual27594.108964.0000%6800006800003.07681.5840%97.185764.5702%0.5702%
PrimeNet2715.879861.9718%340000160000005.39895.2572%11.278663.9710%1.9992%
GPU7227594.108964.0000%550000180000006.79033.8825%100.899265.3977%1.3977%
Difference---+130000-17320000-3.7135-2.2985%-3.7135-0.8275%-0.8275%

Known prime factors (1 factor, 77.5 bits, 0.00009531% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
813091192127887754597769061892712477.4941308517286110165
5 × 53 × 257 × 31489 × 610157
2017-05-0931489610157525.150.28510.2900

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-05-09T08:23:01Jwb52zClay6800006800002477.4943.077507.46.1541.584%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-08T01:40:00Architects Cubedm1_03264265--0.046--
2012-08-20T07:11:00Carsten KossendeyManual testing265266--0.092--
2013-01-30T09:37:00phoenicisManual testing266267--0.184--
2013-02-14T00:28:00Simon HarrisonManual testing267268--0.368--
2013-02-25T02:55:00OLAFEpcjcchudson02268269--0.735--
2013-03-02T00:57:00Andriy Makukhahome-i5269270--1.470--
2014-02-25T00:22:00GrunwalderGIMPcompute-0-6270271--2.941--
2016-09-20T22:55:09Judge HaleManual testing271272--5.882--
2016-09-20T23:55:09Judge HaleManual testing272273--11.76--
2016-11-12T00:56:46ANONYMOUSManual testing273274--23.53--
2016-11-12T00:56:46ANONYMOUSManual testing274275--47.06--


ECM factoring results:
No ECM results for M81309119


Lucas-Lehmer results:
No L-L results for M81309119


PRP results:
No PRP results for M81309119


P-1 factor-bounds graph:
B1 = 680000 (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
250
260
270
280
290
2100
Last modified: 2017-05-09T08:23:01+00:00