is 2 64148143 - 1
has 19310516 decimal digits
takes 155.604 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
Actual27459.641164.8649%5700005700002.00481.5894%61.645965.4233%0.5584%
PrimeNet2703.725062.8571%280000120000003.23075.2151%6.955764.7942%1.9370%
GPU7227459.641164.8649%400000140000004.01313.7920%63.654266.1972%1.3323%
Difference---+170000-13430000-2.0082-2.2026%-2.0082-0.7739%-0.7739%

Known prime factors (1 factor, 74.6 bits, 0.00011632% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
64148143290213206853098329667432374.620226205462294597
107 × 383 × 11801 × 467737
2013-06-1311801467737112.530.12890.1674

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-06-13T22:30:00Jwb52zClay5700005700002374.6202.005311.24.0101.589%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-17T00:00:00ANONYMOUSv4_computers21250--2.33819e-6--
2003-08-25T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-01-18T00:00:00AxelFoxv4_computers21260--0.002--
2022-03-30T08:07:57LordJuliusManual testing260263--0.022--
2009-03-07T05:14:00glennpatLinux-3263264--0.031--
2009-03-07T18:02:00Sturle Sundegofy.ifi264265--0.058--
2009-03-11T16:56:00GunnarLuGrinbergs265266--0.116--
2009-03-14T13:36:00GunnarLuGrinbergs266267--0.233--
2009-03-23T15:56:00Thomas Lepluscharon267268--0.466--
2009-09-20T01:02:00Team_Elteor_Borislavj~BroncoATI1268269--0.932--
2012-01-23T05:34:00america64Manual testing269270--1.864--
2013-04-23T22:41:00Jerry HallettManual testing270271--3.728--
2013-04-23T22:41:00Jerry HallettManual testing271272--7.455--
2013-04-23T22:41:00Jerry HallettManual testing272273--14.91--
2013-04-23T22:41:00Jerry HallettManual testing273274--29.82--


ECM factoring results:
No ECM results for M64148143


Lucas-Lehmer results:
No L-L results for M64148143


PRP results:
No PRP results for M64148143


P-1 factor-bounds graph:
B1 = 570000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
263
260
259
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250
260
270
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2100
Last modified: 2022-03-30T08:07:57+00:00