5^503+1

Open composite · C246

NFS Planning

GNFS Murphy estimate: 1.20e-17
SNFS Murphy raw: 8.40e-17
SNFS Murphy normalized (deg 6): 5.25e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.58499

Identifiers

Target expression: 5^503+1
Target link: FactorDB page
Target ID: 1000000000016637031
Target changed: Before 6/8/2026
Parent query: Same as target
Parent ID: -
Cofactor token: C246
Imported: Jun 07, 2026, 01:42 AM UTC

Raw pmain126 Factorization

(1) 2689940050905281.124406973615393503996181711527.14431277493255383652600216354005959045406674334375840908040203.C246

SNFS Polynomial

Polynomial

Degree: 7
Raw Murphy: 8.40e-17
Normalized (deg 6): 5.25e-17
Skew: 1.58499
Selected: Best

n: 131785863452590936241018941878476073923100678581290157273219881535087136435586673937537590479847592541833804585168610564313772953714555517813358902455072682242811604204406699897856833475715535031369115675728760431116424803125996521229953006591761
# 5^503+1, difficulty: 352.28, skewness: 1.26
# cost: 9.26938e+21, est. time: 4413992.33 GHz days (not accurate yet!)
# Optimized skew: 1.58499 Murphy: 8.40e-17
skew: 1.58499
c7: 1
c0: 5
Y1: -1
Y0: 211758236813575084767080625169910490512847900390625
type: snfs