is 2 2743043 - 1
has 825739 decimal digits
takes 0.212 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26710.832567.1642 %2550001915867801.19607.1854 %12.028569.5236 %
Target2630.581865.0794 %1400012000000.00881.7082 %0.590665.6759 %
Difference+4+10.2506+2.0848 %+241000+190386780+1.1872+5.4772%+11.4378+3.8477 %

Known prime factors (2 factors, 109.3 bits, 0.00398375% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2743043394998193928.55772
23 × 32
-991.304e-111.008e-62.051e-6
274304319895230528068718847128492580.719362648899927356568
23 × 73 × 131 × 409 × 11589879313
2018-04-174091158987931389,26870.717132.08

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-11-22USAFSSUSAFSACS255000191586780
skipped known factor: 394998193
--1.31810.307%


Trial Factoring results:
5758596061626364656667
No TF results for M2743043


ECM factoring results:
Total ECM effort:0.413 GHz-days
Estimated T-Level:0.769
DigitsB1CompleteFacMiss
20110000.15485.740%
25500000.01498.587%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.312
50000500000010.101


Lucas-Lehmer results:
No L-L results for M2743043


PRP results:
dateuseridcompidcofactorsres64
2017-10-20Oliver KruseGTX-3
394998193
B73402DDB4643619
2017-12-05kkmrkkblmbrbkc4.xlarge
394998193
B73402DDB4643619
2018-04-17ATHxps
394998193
1989523052806871884712849
B73402DDB4643619


CERT results:
No CERT results for M2743043


P-1 factor-bounds graph:
B1 = 255000, B2 = 191586780 (P-1 stage 2)
B1 = 255000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=0.77 ~= -14-bit
250
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270
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290
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Last modified: 2024-02-09T03:30:02+00:00