2LM

2^2998+1 L

Open composite · C406 · component L

NFS Planning

GNFS Murphy estimate: 6.32e-27
SNFS Murphy score: 6.01e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.73579

Identifiers

Target expression: 2^1499+1-2^750
Target value: 17537331055217019373813793980140428996762007940165414412037899012395481925281661101828540443292484630826575203397718758699647274470734979877085519459002350423944978242664548632243401355791731473268341092170069314725677729132467248876170276838917318504825879156142838149195677227171520332171942294851060689000502501803665935137705867966076919357666791638568481182353794727458370037525338109949409814922396390181672311251644158075247600968816294902104065
Target link: FactorDB page
Target ID: 1100000000003845679
Target changed: -
Parent query: 2^2998+1
Parent ID: -
Cofactor token: C406
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2) 2473463192799863936418952436352014097575008009. C406

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 6.01e-20
Skew: 0.73579
Selected: Best

n: 1418038570880486327230693353541382092281691665318062133659708639284942844355885377763467935898496575140900679128226383370684152119475275895108326890569699745060945162957877364607464342500751608415028669060293078219021989666486152234443730943867018127027422213826249064985174538341409235413699927959023554353151880396711347306392579996865223485719520233581302838294708528751647329711608233901601492289262757
# 2^2998+1 Aurifeuillian L, difficulty: 451.24, skewness: 0.77
# cost: 2.7612e+24, est. time: 1314857072.81 GHz days (not accurate yet!)
# Optimized skew: 0.73579 Murphy: 6.01e-20
skew: 0.73579
c8: 8
c4: -4
c0: 1
Y1: -1
Y0: 196159429230833773869868419475239575503198607639501078528
type: snfs