is 2 1179293 - 1
has 355003 decimal digits
takes 0.036 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
Actual26725.196468.6567 %300000100000000.03684.1519 %25.233269.9581 %
Target2600.130265.0000 %50001400000.00050.7996 %0.130865.2799 %
Difference+7+25.0661+3.6567 %+295000+9860000+0.0363+3.3523%+25.1024+4.6782 %

Known prime factors (2 factors, 130.6 bits, 0.01107373% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1179293133791631520807991753.5715672535643
5672535643
-156725356430.001613.74325.667
11792931533156580929739513954972477.02165003208741582436
22 × 13 × 37 × 719 × 881 × 953 × 55967
2014-12-309535596729,0780.00020.0003

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-12-30alpertronManual testing300000100000001222477.0210.0388.262%


Trial Factoring results:
5758596061626364656667
No TF results for M1179293


ECM factoring results:
Total ECM effort:19.044 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000028110.68
25000025000000448.363


Lucas-Lehmer results:
No L-L results for M1179293


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-2
13379163152080799
153315658092973951395497
DE5BD040DDBAEFB8
2017-10-05Oliver KruseManual testing
13379163152080799
153315658092973951395497
DE5BD040DDBAEFB8
2017-10-17Oliver KruseThreadripper-PC
13379163152080799
153315658092973951395497
DE5BD040DDBAEFB8
2018-01-03ATHec2-8x
13379163152080799
153315658092973951395497
DE5BD040DDBAEFB8


CERT results:
No CERT results for M1179293


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
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1010
TF factor-bounds graph:
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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Last modified: 2024-03-13T02:15:48+00:00