5^526+1

Open composite · C254

NFS Planning

GNFS Murphy estimate: 4.14e-18
SNFS Murphy score: 2.66e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.99594

Identifiers

Target expression: 5^526+1
Target link: FactorDB page
Target ID: 1000000000016637169
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C254
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(2) 24978689.211297357.9573494476958437181129.57370364344047261751973.34446782443113410904289164131134167536732914603003729.C254

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.66e-17
Skew: 0.99594
Selected: Best

n: 17533897604657307535965269813378667105597556457788949209919604435157760074581050534747478622022073909169991994826957532706731707134303656656895423810522995927920930513016218897185422578600175691470763324141118221227859585610623360647529766201932918323409
# 5^526+1, difficulty: 367.66, skewness: 1.26
# cost: 2.38114e+22, est. time: 11338743.18 GHz days (not accurate yet!)
# Optimized skew: 0.99594 Murphy: 2.66e-17
skew: 0.99594
c7: 1
c0: 5
Y1: -26469779601696885595885078146238811314105987548828125
Y0: 1
type: snfs