is 2 1156483 - 1
has 348137 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L58A80E0FBA9143A3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26725.693368.6567 %500000100000000.04374.4299 %25.737170.0452 %
Target2600.132865.0000 %50001300000.00050.7718 %0.133365.2701 %
Difference+7+25.5605+3.6567 %+495000+9870000+0.0432+3.6581%+25.6038+4.7750 %

Known prime factors (1 factor, 67.2 bits, 0.00581225% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11564831716113866795856999692167.21874195378003648
26 × 11 × 105391161937
2015-05-196410539116193738.493246.77460.90

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-03-16Jossv4_computers10001000--4.30000e-50.039%
2002-03-24Jossv4_computers40004000--0.0000.226%
2002-06-02ANONYMOUSv4_computers500001000000--0.0044.181%
2012-02-03markrtiny5000001000000012--0.0478.611%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-10ANONYMOUSv4_computers212570.017
2003-05-04ANONYMOUSv4_computers212580.033
2022-03-07LordJuliusManual testing258260
2009-02-14Sturle Sundeginy.ifi2602610.133
2011-05-09XyzzyManual testing2612620.266
2012-10-07dbaughManual testing2622630.849
2014-12-28Matthias WurtingerManual testing2632641.698
2015-01-10lycornManual testing2642653.231


ECM factoring results:
Total ECM effort:17.630 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002799.76
50000500000020.073
25000025000000447.798


Lucas-Lehmer results:
No L-L results for M1156483


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-1
171611386679585699969
630864F27C294B5B
2017-10-17Oliver KruseThreadripper-PC
171611386679585699969
630864F27C294B5B
2018-01-03ATHec2-1xh
171611386679585699969
630864F27C294B5B


CERT results:
No CERT results for M1156483


P-1 factor-bounds graph:
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 4000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
265
264
263
262
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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260
270
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Last modified: 2024-03-13T02:15:48+00:00