is 2 1484999 - 1
has 447030 decimal digits
takes 0.057 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LEA65EFE46751D627double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.009468.6567 %500000010061142003.296411.4783 %23.305872.2544 %
Target2610.206965.5738 %60002500000.00110.9458 %0.207965.8994 %
Difference+6+19.8025+3.0829 %+4994000+1005864200+3.2954+10.5325%+23.0979+6.3550 %

Known prime factors (2 factors, 148.8 bits, 0.01002045% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14849997789002354062777985372169.400262256148120732
22 × 3 × 17 × 137 × 9383717909
2012-08-24137938371790991.06128.30452.864
14849997996168947885193416140712479.404269231459007217965
3 × 5 × 1058179 × 16961935489
2022-02-24105817916961935489157,13151.21795.556

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers20000270000--0.0022.305%
2011-01-08Rob_Deetwopc100000200000--0.0072.642%
2011-01-09Rob_Deetwopc200000300000--0.0133.155%
2011-01-11Rob_Deetwopc20000010000006--0.0164.575%
2011-01-12Rob_Deetwopc20000020000006--0.0195.407%
2011-01-13Rob_Deetwopc20000030000006--0.0235.901%
2011-01-14Rob_Deetwopc20000040000006--0.0266.253%
2011-01-15Rob_Deetwopc20000050000006--0.0306.528%
2016-03-17alpertronManual testing5000001500000012---8.666%
2023-11-25Anton TsvetkovManual testing50000001006114200--3.29617.150%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-11-14ANONYMOUSv4_computers212570.013
2003-07-30ANONYMOUSv4_computers212580.026
2010-05-08Architects Cubedm1_f22602610.103
2011-05-07GrunwalderGIMPManual testing212631.075


ECM factoring results:
Total ECM effort:29.860 GHz-days
Estimated T-Level:25.701
DigitsB1CompleteFacMiss
201100014.5380.000%
25500001.64019.395%
302500000.14086.925%
3510000000.01099.024%


ECM Summary

B1B2factorcurvesGHz-days
10.143
50000500000024813.67
2500003500000010.321
250000350000004915.72


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-28ANONYMOUSv4_computersEA65EFE46751D6270.057


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-0
778900235406277798537
F307D2DF387EDBF6
2017-10-28kkmrkkblmbrbkold
778900235406277798537
F307D2DF387EDBF6
2022-02-24SRJ2877LTOS
778900235406277798537
799616894788519341614071
5071D07C0014EF3A


CERT results:
dateuseridcompid
2022-02-24Tom Kayserven0


P-1 factor-bounds graph:
B1 = 5000000, B2 = 1006114200 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 200000, B2 = 4000000 (P-1 stage 2)
B1 = 200000, B2 = 3000000 (P-1 stage 2)
B1 = 200000, B2 = 2000000 (P-1 stage 2)
B1 = 200000, B2 = 1000000 (P-1 stage 2)
B1 = 200000, B2 = 300000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
263
261
258
257
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00