2LM

2^2606+1 L

Open composite · C302 · component L

NFS Planning

GNFS Murphy estimate: 6.80e-21
SNFS Murphy score: 2.74e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.14470

Identifiers

Target expression: 2^1303+1-2^652
Target value: 174616126543238670907661452824097973723824595619038916127076696830989019596480855165575711757662617031125233380379586592413725029798432408632283371343275236740862912390996977812631384064875914128313054600993649752082252308441736307155702485661329630102964258882909141346241236769873191507539908655704314277036019838293503465078707625015695502403839107785471700463481778505127059402210265792513
Target link: FactorDB page
Target ID: 1100000000001770524
Target changed: -
Parent query: 2^2606+1
Parent ID: -
Cofactor token: C302
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

578533.62643029.4977311911993209330675857.19703069680686093788435311449159238692457283154085141.C302

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.74e-18
Skew: 1.14470
Selected: Best

n: 49130899326762578104014694248759276402566016342709053153206558510584666423572653850734234547615144559896659881294434724046287492764939239450288840677401381286386565313824855198577985877440770693189492211280159967114329149377234513246676129146502383894474494623967797724272995383925970551970126680079557
# 2^2606+1 Aurifeuillian L, difficulty: 392.54, skewness: 1.09
# cost: 1.04364e+23, est. time: 49697230.76 GHz days (not accurate yet!)
# Optimized skew: 1.14470 Murphy: 2.74e-18
skew: 1.14470
c8: 1
c4: -2
c0: 2
Y1: -1
Y0: 11692013098647223345629478661730264157247460343808
type: snfs