is 2 6014951 - 1
has 1810681 decimal digits
takes 1.066 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L5573849CA6E22833double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.940065.6716 %11000021725000.05713.2162 %4.997266.7757 %
Target2662.455365.1515 %4000045000000.07272.4181 %2.528065.9942 %
Difference+1+2.4847+0.5201 %+70000-2327500-0.0156+0.7981%+2.4691+0.7815 %

Known prime factors (1 factor, 73.8 bits, 0.00122722% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6014951166387291360546138002312373.8171383114271093365
3 × 5 × 619 × 34583 × 4307383
2017-10-11345834307383318.010.06870.1126

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-11-05ANONYMOUSv4_computers25000250000--0.0101.522%
2001-02-04ANONYMOUSv4_computers25000250000--0.0101.522%
2001-09-16PhillTv4_computers2000070000--0.0060.916%
2013-01-17Squeeky_SquirrelP4_260011000021725006--0.0573.601%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-10-11ANONYMOUSv4_computers212620.051
2016-02-23Mark RoseManual testing2622630.163
2014-04-28c10ck3rManual testing2632650.948
2015-10-02snme2pm1Manual testing2652661.242
2016-03-11Gordon SpenceManual testing2662672.485


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
50000500000041.078
50000500000020.539


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-06eteov4_computers5573849CA6E228331.066
2001-05-06ANONYMOUSv4_computers8962F057A13CF3181.066
2002-01-28PhillTv4_computers5573849CA6E228331.066


PRP results:
dateuseridcompidcofactorsres64
2017-10-18Yaroslav BerezhkoManual testing
16638729136054613800231
A191B1740615BEAC
2018-05-03kkmrkkblmbrbkc5.large
16638729136054613800231
A191B1740615BEAC


CERT results:
No CERT results for M6014951


P-1 factor-bounds graph:
B1 = 110000, B2 = 2172500 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 25000, B2 = 250000 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
B1 = 20000, B2 = 70000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
267
266
265
263
262
this exponent TF target: 66
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00