is 2 1494019 - 1
has 449745 decimal digits
takes 0.067 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L2423F93AC1A376F8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26719.888668.6567 %2000000600000000.33427.2515 %20.222870.9296 %
Target2610.205665.5738 %60002500000.00120.9471 %0.206965.8998 %
Difference+6+19.6830+3.0829 %+1994000+59750000+0.3329+6.3044%+20.0159+5.0297 %

Known prime factors (1 factor, 72.9 bits, 0.00487658% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
149401985535527151448771655432272.8572862598372291409
2862598372291409
2016-03-2812862598372291409968.4010,101,15518,866,145

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers20000285000--0.0022.343%
2011-12-07markrtiny275000600000012--0.0386.990%
2015-04-24alpertronManual testing20000006000000012--0.33411.749%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-11-14ANONYMOUSv4_computers212570.013
2003-07-30ANONYMOUSv4_computers212580.026
2010-05-07Architects Cubedm1_fw2602610.103
2011-05-28GrunwalderGIMPManual testing212631.068
2016-02-23Mark RoseManual testing2582630.940
2015-04-07snme2pm1Manual testing2632653.815
2015-09-25ramgeisManual testing2652665.002


ECM factoring results:
Total ECM effort:30.086 GHz-days
Estimated T-Level:25.707
DigitsB1CompleteFacMiss
201100014.7690.000%
25500001.66118.986%
302500000.14186.808%
3510000000.01099.018%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025213.91
50000500000020.111
250000350000005016.06


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-13ANONYMOUSv4_computers2423F93AC1A376F80.067
2015-07-19MadPooManual testing2423F93AC1A376F80.067


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-1
8553552715144877165543
AE9237E199304F16
2017-10-29kkmrkkblmbrbkold
8553552715144877165543
AE9237E199304F16


CERT results:
No CERT results for M1494019


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 275000, B2 = 6000000 (P-1 stage 2)
B1 = 275000 (P-1 stage 1)
B1 = 20000, B2 = 285000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
TF factor-bounds graph:
266
265
263
261
258
257
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.71 ~= 69-bit
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00