5^499+1

Open composite · C303

NFS Planning

GNFS Murphy estimate: 5.95e-21
SNFS Murphy score: 9.98e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.25914

Identifiers

Target expression: 5^499+1
Target link: FactorDB page
Target ID: 1000000000016637007
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C303
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 1783427.731235661820267173253289476481600895823. C303

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 9.98e-17
Skew: 1.25914
Selected: Best

n: 780851074980451083207022065351299001484424461908031846796515069313846989720932551324409454457573724028694607215099661331321033861266619279756898656992234612627344143511823522694189489558298076363877298043469771509953319662285499302732028963807960560858768120637464833635395868634144783500288962345010601
# 5^499+1, difficulty: 348.79, skewness: 1.58
# cost: 7.45481e+21, est. time: 3549907.32 GHz days (not accurate yet!)
# Optimized skew: 1.25914 Murphy: 9.98e-17
skew: 1.25914
c7: 1
c0: 25
Y1: -42351647362715016953416125033982098102569580078125
Y0: 1
type: snfs