7^457+1

Open composite · C381

NFS Planning

GNFS Murphy estimate: 1.78e-25
SNFS Murphy score: 5.97e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.37531

Identifiers

Target expression: 7^457+1
Target link: FactorDB page
Target ID: 1000000000016828755
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C381
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 21023. C381

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 5.97e-18
Skew: 1.37531
Selected: Best

n: 963872543308242671523950386699852004272984520676199562168833855379185614885951202647192096465752783575631741401057435920229914270046233013255147294542151889596271964139328021382318473062421010719550538636455839287725169016072186658602031117856827674629006258318292158794344861798186694625750499221216945560675113348741973270319623489120213817864662532410527273535267378182240184887
# 7^457+1, difficulty: 386.21, skewness: 1.74
# cost: 7.20441e+22, est. time: 34306707.53 GHz days (not accurate yet!)
# Optimized skew: 1.37531 Murphy: 5.97e-18
skew: 1.37531
c7: 1
c0: 49
Y1: -8538323413450849900970017037940802745289307058918668807
Y0: 1
type: snfs