is 2 6004373 - 1
has 1807497 decimal digits
takes 1.064 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L087D6682CC537F01double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2689.926966.1765%1250000500000001.00377.1810%10.930768.6053%2.4289%
PrimeNet2620.102362.9032%260006000000.01473.3301%0.117064.1386%1.2354%
GPU722662.459665.1515%400009000000.02232.4174%2.481965.9940%0.8424%
Difference+2+7.4673+1.0250%+1210000+49100000+0.9814+4.7636%+8.4487+2.6114%+2.6114%

Known prime factors (1 factor, 89.3 bits, 0.00148686% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
60043737497295740453647326097860812789.27762431962008802978480
24 × 3 × 5 × 7 × 19 × 373 × 643781 × 8145113
2017-09-22643781814511339,861,9650.27050.3367

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-11-05T00:00:00mhoneyv4_computers2000070000---0.006--0.671%
2011-03-17T18:52:00markrtiny1100002172500---0.057--2.867%
2017-09-22T12:02:02mikrS065125000050000000122789.2771.0042.1282.0077.181%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-16T00:00:00ANONYMOUSv4_computers21261--0.051--
1998-11-21T00:00:00ANONYMOUSv4_computers21262--0.102--
1998-12-21T00:00:00ANONYMOUSv4_computers21262--0.102--
1998-12-27T00:00:00ANONYMOUSv4_computers21262--0.102--
1999-01-02T00:00:00ANONYMOUSv4_computers21262--0.102--
2016-02-23T16:39:15Mark RoseManual testing262263--0.163--
2014-01-05T16:11:00krackerManual testing263264--0.327--
2014-01-05T21:55:00lycornManual testing264265--0.622--
2015-09-29T11:37:07Bruno VictalManual testing265266--1.245--
2016-03-09T01:41:53Gordon SpenceManual testing266267--2.489--
2017-09-20T17:55:13mikrManual testing267268--4.978--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.617 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:1.617 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.19482.403%
25500000.01798.266%
302500000.00199.892%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.617


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00ANONYMOUSv4_computers087D6682CC537F011.064
2000-12-14T00:00:00mhoneyv4_computers087D6682CC537F011.064
2016-06-17T19:17:01Vteammicael087D6682CC537F011.064


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-16T16:20:58Oliver KruseGTX-1
749729574045364732609786081
17FDD80DCE5FDF__no
2018-05-02T23:00:58kkmrkkblmbrbkc5.large
749729574045364732609786081
17FDD80DCE5FDF__no


P-1 factor-bounds graph:
B1 = 1250000, B2 = 50000000 (P-1 stage 2)
B1 = 1250000 (P-1 stage 1)
B1 = 110000, B2 = 2172500 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 20000, B2 = 70000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
268
267
266
265
264
263
262
261
250
260
270
280
290
2100
Last modified: 2018-05-02T23:00:58+00:00