2LM

2^2602+1 L

Open composite · C385 · component L

NFS Planning

GNFS Murphy estimate: 1.04e-25
SNFS Murphy score: 2.90e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.36735

Identifiers

Target expression: 2^1301+1-2^651
Target value: 43654031635809667726915363206024493430956148904759729031769174207747254899120213791393927939415654257781308345094896648103431257449608102158070842835818809185215728097749244453157846016218978532073591711055967310116674517386196978472234955423909882156827971582398427565338623548686243158095988850552748844255644286487230632634988457743713150409564229617597882569325533317396901677692044181505
Target link: FactorDB page
Target ID: 1100000000000204245
Target changed: -
Parent query: 2^2602+1
Parent ID: -
Cofactor token: C385
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2) 947129. C385

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.90e-18
Skew: 1.36735
Selected: Best

n: 9218180762242454349284070745595265994591264527801329920585089086649707674270392690202480958647798611969712329597108028178512379506827074697970570605655366731504521157677411303667788868510831899788432560096030701227958286017257834671356268348643084977194863969406158520188617083562269375786400553789979790346540816823733753825506020350704740412248855143828957316126004655627037431583669
# 2^2602+1 Aurifeuillian L, difficulty: 392.54, skewness: 1.30
# cost: 1.04364e+23, est. time: 49697230.76 GHz days (not accurate yet!)
# Optimized skew: 1.36735 Murphy: 2.90e-18
skew: 1.36735
c8: 1
c4: -4
c0: 8
Y1: -1
Y0: 11692013098647223345629478661730264157247460343808
type: snfs