12^389+1

Open composite · C392

NFS Planning

GNFS Murphy estimate: 4.10e-26
SNFS Murphy score: 4.09e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.85168

Identifiers

Target expression: 12^389+1
Target link: FactorDB page
Target ID: 1100000000024338891
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C392
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 9337.51349.144709.50927190697447. C392

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 4.09e-19
Skew: 1.85168
Selected: Best

n: 13784047115820573647832130958563581603054884891874829580385702675503164620904089090381508483988417292418159132976711968576889099258614708810955569802132165330805249940684413116510294033899216079008506007426468106696982889125544309152413734247810288903345540392575714485475692032857096398292082449612204226329506538362754600963229271884576163926260323015953954498686183945541470536033347195219
# 12^389+1, difficulty: 421.23, skewness: 1.45
# cost: 5.35474e+23, est. time: 254987760.57 GHz days (not accurate yet!)
# Optimized skew: 1.85168 Murphy: 4.09e-19
skew: 1.85168
c7: 2
c0: 27
Y1: -1
Y0: 1358688135444800959437989819540424878258563941944125720363008
type: snfs