is 2 64836413 - 1
has 19517706 decimal digits
takes 157.273 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
Actual27459.008064.8649%575000103500003.89563.7503%62.903666.1825%1.3177%
PrimeNet2703.685462.8571%280000130000003.42245.2974%7.107864.8248%1.9676%
GPU7227459.008064.8649%450000140000004.17943.8605%63.187366.2213%1.3564%
Difference---+125000-3650000-0.2837-0.1103%-0.2837-0.0387%-0.0387%

Known prime factors (1 factor, 98.9 bits, 0.00015248% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
648364135756048110320301555399454133433098.8614438900799709803159067
32 × 41 × 47 × 211 × 8513 × 38351 × 3715433
2013-06-30383513715433995,821,3500.83951.3298

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-06-30T22:47:00Jwb52zClay575000103500003098.8613.896314.57.7913.750%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-09-29T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-02-14T00:00:00AxelFoxv4_computers21260--0.002--
2022-03-30T15:45:51LordJuliusManual testing260263--0.022--
2009-03-12T21:06:00belluzzi7_920_6GB263264--0.030--
2009-03-14T23:52:00belluzzi7_920_6GB264265--0.058--
2009-03-17T06:47:00arnaudSRV-330265266--0.115--
2009-03-21T15:15:00JudgeGabranthMidgardsormr266267--0.231--
2009-03-22T19:47:00Sturle Sundeheroe.ifi267268--0.461--
2009-09-25T11:43:00HomasterHomaster268269--0.922--
2012-02-24T01:57:00RichardUNKNOWN269270--1.844--
2013-05-21T18:12:00TheJudgerManual testing270271--3.688--
2013-05-21T18:12:00TheJudgerManual testing271272--7.376--
2013-05-21T18:12:00TheJudgerManual testing272273--14.75--
2013-06-24T23:42:00Jerry HallettManual testing273274--29.51--


ECM factoring results:
No ECM results for M64836413


Lucas-Lehmer results:
No L-L results for M64836413


PRP results:
No PRP results for M64836413


P-1 factor-bounds graph:
B1 = 575000, B2 = 10350000 (P-1 stage 2)
B1 = 575000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
263
260
259
250
260
270
280
290
2100
Last modified: 2022-03-30T15:45:51+00:00