2LM

2^2494+1 M

Open composite · C221 · component M

NFS Planning

GNFS Murphy estimate: 3.39e-16
SNFS Murphy score: 8.03e-18
Preferred method: GNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.18913

Identifiers

Target expression: 2^1247+1+2^624
Target value: 2423285551989543969259886147306320615721694717012975552426444448158985017722789267546553034738712987127346362442309271495645764807314487385596126924659433020959638410571315406303196994043393655349797547965668765603109461124943727974410528086137189122984510795834788286532384363708726795558379482080026968597569856130462275289779510791642189272194945624264669889696722839404545
Target link: FactorDB page
Target ID: 1100000000003198545
Target changed: -
Parent query: 2^2494+1
Parent ID: -
Cofactor token: C221
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2,58L,86L) 32397061.260293793.1365338648031806893.14015092861678945577467193163309833422440329.209274240124717471245904118687826696450175732071912105901.C221

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 8.03e-18
Skew: 1.18913
Selected: Best

n: 75983634135188083180423609246803569884364015339712299822862961447159114386766562901626424162466423303929518995576612802150143882267653040563031847146521904494405107710571596112208329486900192440800784888240177557025648561
# 2^2494+1 Aurifeuillian M, difficulty: 375.69, skewness: 1.09
# cost: 3.85996e+22, est. time: 18380741.75 GHz days (not accurate yet!)
# Optimized skew: 1.18913 Murphy: 8.03e-18
skew: 1.18913
c8: 1
c4: 2
c0: 2
Y1: -1
Y0: 91343852333181432387730302044767688728495783936
type: snfs