5^565+1

Open composite · C287

NFS Planning

GNFS Murphy estimate: 5.04e-20
SNFS Murphy score: 1.82e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.47972

Identifiers

Target expression: 5^565+1
Target link: FactorDB page
Target ID: 1000000000016637403
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C287
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,5,113) 1410495901146244615561508821. C287

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.82e-16
Skew: 0.47972
Selected: Best

n: 11701254038292069951722560758654829239012842899024433654300479140437026183977199278384475319499510763319352719365846829605406736889954557261317647710976000961712952656692803661256267279125602748888066734456621795007519682349638840414943314947852393817572111930675566411187695320803812861
# 5^565+1, difficulty: 315.93, skewness: 0.45
# cost: 8.99032e+20, est. time: 428110.58 GHz days (not accurate yet!)
# Optimized skew: 0.47972 Murphy: 1.82e-16
skew: 0.47972
c8: 625
c6: -125
c4: 25
c2: -5
c0: 1
Y1: -1
Y0: 1387778780781445675529539585113525390625
type: snfs