2+(odd)

2^1399+1

Open composite · C392

NFS Planning

GNFS Murphy estimate: 4.10e-26
SNFS Murphy score: 4.14e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.41030

Identifiers

Target expression: 2^1399+1
Target link: FactorDB page
Target ID: 1000000000012151423
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C392
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1) 33577.2997043588920134984472587. C392

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 4.14e-19
Skew: 1.41030
Selected: Best

n: 45825554544205639317290716973625411310600346443484590937206175385824159196178483858806798059999900526906144708795926755610566104085470404285859423457235442765648913943996877556873152167959216156148928160899000652055998436735031688954919278072517524740779600514978397006652271087487298312258618559587762771910181150135619668915107457089958945606861282094084816367073387704490565975538489721337
# 2^1399+1, difficulty: 421.44, skewness: 1.10
# cost: 5.4176e+23, est. time: 257980774.12 GHz days (not accurate yet!)
# Optimized skew: 1.41030 Murphy: 4.14e-19
skew: 1.41030
c7: 1
c0: 2
Y1: -1
Y0: 1606938044258990275541962092341162602522202993782792835301376
type: snfs