11^397+1

Open composite · C387

NFS Planning

GNFS Murphy estimate: 7.99e-26
SNFS Murphy score: 5.14e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.52789

Identifiers

Target expression: 11^397+1
Target link: FactorDB page
Target ID: 1000000000017212395
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C387
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 3411299519.11919198984255473. C387

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 5.14e-19
Skew: 2.52789
Selected: Best

n: 555325784266227480901919181320507338896162695826451754833319132627546868126303828277595084052884025511601026556694619743620108938867865446937760095186856862673032194052338149853546279569247275775418987359789833262759579624107330225430453488617782269135555858352096121052951065777419319422538941063645069016675390649260444452626564928727941693358173405111699352995945336678347501038125163
# 11^397+1, difficulty: 415.52, skewness: 1.98
# cost: 3.88683e+23, est. time: 185087015.88 GHz days (not accurate yet!)
# Optimized skew: 2.52789 Murphy: 5.14e-19
skew: 2.52789
c7: 1
c0: 121
Y1: -1
Y0: 228761562390246506066453264733492693192365450838991802120171
type: snfs