2LM

2^2806+1 M

Open composite · C380 · component M

NFS Planning

GNFS Murphy estimate: 2.04e-25
SNFS Murphy score: 3.45e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.76634

Identifiers

Target expression: 2^1403+1+2^702
Target value: 221352237622064961171935537494999073038657564773500751383529226629156920296489751179783664999266890441835180257327994350943084362983828857641413041451621415471368590729843601151873431692464409573118546825860012623714403127988416096270049327913063842175230359235564988704611767210081066187360319997115649154861195979618014732791170297799684318118271601387801640546683239487210269692583318692107811713380697740860889090752513
Target link: FactorDB page
Target ID: 1100000000002437313
Target changed: -
Parent query: 2^2806+1
Parent ID: -
Cofactor token: C380
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(46L,122M) 179895106033036397. C380

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 3.45e-19
Skew: 0.76634
Selected: Best

n: 63643930016694868575913439767763544000757695989463347280825796410381649720101870183547267189978274728949306529121750306886701527187500850749696390608820966317811934277818494347911676216730311970417202287812470839232364862224750626288937449798106925053236692651634183084493704365787403956192814578475736949805827926249349480916517295096790658664641218121968878908022558134313880933
# 2^2806+1 Aurifeuillian M, difficulty: 422.35, skewness: 0.77
# cost: 5.69738e+23, est. time: 271303692.44 GHz days (not accurate yet!)
# Optimized skew: 0.76634 Murphy: 3.45e-19
skew: 0.76634
c8: 8
c4: 4
c0: 1
Y1: -1
Y0: 47890485652059026823698344598447161988085597568237568
type: snfs