2+(odd)

2^1369+1

Open composite · C273

NFS Planning

GNFS Murphy estimate: 3.27e-19
SNFS Murphy score: 7.81e-19
Preferred method: Similar
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.71600

Identifiers

Target expression: 2^1369+1
Target link: FactorDB page
Target ID: 1000000000012151393
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C273
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1,37) 547313788615883.11523488587105507.688408207595429676061727757577539753316133668163.42312517840752150334067623868470433911721535795659.C273

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 7.81e-19
Skew: 1.71600
Selected: Best

n: 510292223551442552095861584425807838126294747655501204385251748796629028731690349171042087791601224911112212508539068189809164091907344858442697306367900248624404465857442345322512116378361727492370670399977718172457959066103022774508890819542909427077609366493517858992353
# 2^1369+1, difficulty: 413.01, skewness: 1.35
# cost: 3.37541e+23, est. time: 160733789.76 GHz days (not accurate yet!)
# Optimized skew: 1.71600 Murphy: 7.81e-19
skew: 1.71600
c7: 1
c0: 8
Y1: -1
Y0: 100433627766186892221372630771322662657637687111424552206336
type: snfs