2+(odd)

2^1151+1

Open composite · C236

NFS Planning

GNFS Murphy estimate: 4.58e-17
SNFS Murphy score: 1.24e-16
Preferred method: Similar
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.07025

Identifiers

Target expression: 2^1151+1
Target link: FactorDB page
Target ID: 1000000000012151175
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C236
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1) 9209.264731.7183639052011.8057089084163503088491.3043392259206870967482500082233986390424278957322258801584514334307.C236

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.24e-16
Skew: 1.07025
Selected: Best

n: 23741375746977532472741772735853884540769171394883542744658455080471258958137043395050183725603267557726760733578549922950387105203217917239769285561891453516433982118169421768742820694069659953978342933468904040990856703413893786182411
# 2^1151+1, difficulty: 346.49, skewness: 1.35
# cost: 6.45423e+21, est. time: 3073440.60 GHz days (not accurate yet!)
# Optimized skew: 1.07025 Murphy: 1.24e-16
skew: 1.07025
c7: 1
c0: 8
Y1: -23384026197294446691258957323460528314494920687616
Y0: 1
type: snfs