is 2 8180149 - 1
has 2462471 decimal digits
takes 2.136 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L6D4A6C373E8A3988double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual273233.839868.4932 %150000080057835017.05117.3491 %250.890970.8086 %
Target2673.632465.6716 %5500065000000.15382.6254 %3.786266.5729 %
Difference+6+230.2074+2.8215 %+1445000+794078350+16.8974+4.7237%+247.1047+4.2357 %

Known prime factors:
No known factors for M8180149

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-08-24PaJaSoftv4_computers45000731250--0.0312.181%
2012-11-16NesowaEPC10000019750006--0.0773.239%
2022-01-22FlaukrotistColab_AK21500000800578350--18.0511.782%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-08-30ANONYMOUSv4_computers212620.038
1998-11-28ANONYMOUSv4_computers212630.120
2013-08-26David CampeauManual testing2632640.240
2013-12-28David CampeauManual testing2642650.457
2015-05-28snme2pm1Manual testing2652660.914
2015-12-07snme2pm1Manual testing2662671.827
2018-07-09chuenkitManual testing2672683.654
2020-01-17TJAOIManual testing2682697.308
2021-08-20SRBaseManual testing26927014.62
2021-08-29SRBaseManual testing27027129.23
2021-10-26SRBaseManual testing27127258.47
2023-09-27FlaukrotistManual testing272273116.9


ECM factoring results:
Total ECM effort:2.382 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000062.382


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-23ANONYMOUSv4_computers6D4A6C373E8A39882.136
2002-08-24PaJaSoftv4_computers6D4A6C373E8A39882.136


PRP results:
No PRP results for M8180149


CERT results:
No CERT results for M8180149


P-1 factor-bounds graph:
B1 = 1500000, B2 = 800578350 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 100000, B2 = 1975000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 45000, B2 = 731250 (P-1 stage 2)
B1 = 45000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
262
this exponent TF target: 67
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00