2LM

2^2494+1 M

Open composite · C221 · component M

Target FactorDB

NFS Planning

GNFS Murphy estimate
3.39e-16
SNFS Murphy raw
3.83e-18
SNFS Murphy normalized (deg 6)
3.83e-18
Preferred method
GNFS
SNFS possible
Yes
SNFS degree
6
SNFS skew
1.56555

Identifiers

Target expression
2^1247+1+2^624
Target value
2423285551989543969259886147306320615721694717012975552426444448158985017722789267546553034738712987127346362442309271495645764807314487385596126924659433020959638410571315406303196994043393655349797547965668765603109461124943727974410528086137189122984510795834788286532384363708726795558379482080026968597569856130462275289779510791642189272194945624264669889696722839404545
Target link
FactorDB page
Target ID
1100000000003198545
Target changed
Before 6/8/2026
Parent query
2^2494+1
Parent ID
1000000000012152518
Cofactor token
C221
Imported
Jun 07, 2026, 01:41 AM UTC

Raw pmain126 Factorization

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

SNFS Polynomial

Degree
6
Raw Murphy
3.83e-18
Normalized (deg 6)
3.83e-18
Skew
1.56555
Selected
Best
n: 75983634135188083180423609246803569884364015339712299822862961447159114386766562901626424162466423303929518995576612802150143882267653040563031847146521904494405107710571596112208329486900192440800784888240177557025648561
# 2^2494+1 Aurifeuillian M, difficulty: 375.69, skewness: 1.12
# cost: 3.85996e+22, est. time: 18380741.75 GHz days (not accurate yet!)
# Optimized skew: 1.56555 Murphy: 3.83e-18
skew: 1.56555
c6: 1
c3: 2
c0: 2
Y1: -1
Y0: 411376139330301510538742295639337626245683966408394965837152256
type: snfs