5^488+1

Open composite · C301

NFS Planning

GNFS Murphy estimate: 7.77e-21
SNFS Murphy score: 1.59e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.98941

Identifiers

Target expression: 5^488+1
Target link: FactorDB page
Target ID: 1000000000016636941
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C301
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(8) 977.46455649.13438797761.188732040042673. C301

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.59e-16
Skew: 1.98941
Selected: Best

n: 2782670740289564756529804800300191986155370548717832473685842741346800899470085677056403681167873563332544060370682523398109759834149061982053190004682806090253132588748091647850519762746708923828544267443593133601734176755801545804062716323893362121320984087759027663409424757552702616003374260544929
# 5^488+1, difficulty: 342.50, skewness: 1.58
# cost: 5.01976e+21, est. time: 2390360.66 GHz days (not accurate yet!)
# Optimized skew: 1.98941 Murphy: 1.59e-16
skew: 1.98941
c7: 1
c0: 25
Y1: -1
Y0: 8470329472543003390683225006796419620513916015625
type: snfs