is 2 6085799 - 1
has 1832009 decimal digits
takes 1.079 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L6DB6B51CF6BFB14Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272157.141868.0556 %2500000504220501.31345.4171 %158.455269.7860 %
Target2662.426765.1515 %4000045000000.07272.4228 %2.499465.9958 %
Difference+6+154.7151+2.9040 %+2460000+45922050+1.2406+2.9943%+155.9558+3.7902 %

Known prime factors (1 factor, 104.9 bits, 0.00172423% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
60857993873344779291649230924532959004932104.9333182281224939937410785776
24 × 113 × 811 × 107599 × 872959 × 23105597
2022-09-01872959231055973.141e+100.53560.6042

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-03-11ANONYMOUSv4_computers30000270000--0.0111.632%
2013-03-20Squeeky_SquirrelT7500_220011500022425006--0.0593.658%
2019-06-26takahashivaio400000750000012--0.2025.516%
2022-09-01takahashivaio250000050422050232104.9331.3898.953%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-11-21ANONYMOUSv4_computers212620.050
2016-02-23Mark RoseManual testing2622630.161
2014-09-12NesowaManual testing2632640.323
2014-09-17monstManual testing2642650.614
2015-10-09snme2pm1Manual testing2652661.228
2016-03-15Gordon SpenceManual testing2662672.456
2018-05-29ramgeisManual testing2672684.912
2020-03-09takahashiManual testing2682699.82
2020-12-20takahashiManual testing26927019.65
2021-03-19takahashiManual testing27027139.29
2021-09-18SRBaseManual testing27127278.59


ECM factoring results:
Total ECM effort:1.617 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.617


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-01ANONYMOUSv4_computers14F1C47CB02DF6D71.079
1999-05-02ANONYMOUSv4_computers6DB6B51CF6BFB14C1.079
2001-03-25ANONYMOUSv4_computers6DB6B51CF6BFB14C1.079


PRP results:
dateuseridcompidcofactorsres64
2022-09-08firejugglerMaison
38733447792916492309245329590049
58322C42DAC9F6D4


CERT results:
dateuseridcompid
2022-09-08minnmasshome


P-1 factor-bounds graph:
B1 = 2500000, B2 = 50422050 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 400000, B2 = 7500000 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
B1 = 115000, B2 = 2242500 (P-1 stage 2)
B1 = 115000 (P-1 stage 1)
B1 = 30000, B2 = 270000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
this exponent TF target: 66
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
280
290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00