2LM

2^2986+1 L

Open composite · C333 · component L

NFS Planning

GNFS Murphy estimate: 1.08e-22
SNFS Murphy score: 6.39e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.24047

Identifiers

Target expression: 2^1493+1-2^747
Target value: 274020797737765927715840530939694203074406374065084600188092172068679405082525954716070944426445072356665237553089355604681988663605234060579461241546911725374140285041633572378803146184245804269817829565157333042588714517694153002664367919511502902848114833093947765926297589228253225188893037097014892998518441854180078360741457518173417474964440010010724796672275254375312250086224737683679588865289975542328543498931775401837926615900583796670465
Target link: FactorDB page
Target ID: 1100000000001210707
Target changed: -
Parent query: 2^2986+1
Parent ID: -
Cofactor token: C333
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2) 47777.173189.1674741834350778517.3900547400342197955621.18222546195231439072063867733.356702983805463988148160565880819445133.C333

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 6.39e-20
Skew: 1.24047
Selected: Best

n: 155985816400979314524521225853461880454808240253143766980156426115279891433158715580445899881540341487565744453926091613057242682582761512777399184145228471518687866668484543317230622197870073699584730838248923286713504682667272784298362317066299322375991945989573360490558696304807332351010655551740358284385856449245613252053598897
# 2^2986+1 Aurifeuillian L, difficulty: 450.34, skewness: 1.30
# cost: 2.63079e+24, est. time: 1252755122.62 GHz days (not accurate yet!)
# Optimized skew: 1.24047 Murphy: 6.39e-20
skew: 1.24047
c8: 1
c4: -4
c0: 8
Y1: -1
Y0: 196159429230833773869868419475239575503198607639501078528
type: snfs