2LM

2^2618+1 M

Open composite · C239 · component M

NFS Planning

GNFS Murphy estimate: 3.07e-17
SNFS Murphy score: 1.33e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 2.01691

Identifiers

Target expression: 2^1309+1+2^655
Target value: 11175432098767274938090332980742270318324774119618490632132908597183297254174774730596845552490407489992014936344293541914478401907099674152466135765969615151415226393023806580008408580152058504213381012951017780969584052940851407973171870887854783632836683392344896084271284618681116015493782788216595074531273143499594049051827561171945201008967620528955961083067768281286972395525287423508481
Target link: FactorDB page
Target ID: 1100000000001620543
Target changed: -
Parent query: 2^2618+1
Parent ID: -
Cofactor token: C239
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(14L,22M,34L,154M,238L,374M) 8010451496741.5594047027317673.6518430851483584659473.C239

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 1.33e-16
Skew: 2.01691
Selected: Best

n: 60539833502126990719757176393922153817131814398136829939573445399946547727482124063062322998784230291299508956694742226297605343687503571947046885724774471183830775125661032409216181325758986246186930889289664992347087230284499720309111429
# 2^2618+1 Aurifeuillian M, difficulty: 337.76, skewness: 1.41
# cost: 3.71553e+21, est. time: 1769300.28 GHz days (not accurate yet!)
# Optimized skew: 2.01691 Murphy: 1.33e-16
skew: 2.01691
c6: 1
c5: -2
c4: -10
c3: 20
c2: 16
c1: -32
c0: 8
Y1: -9903520314283042199192993792
Y0: 196159429230833773869868419475239575503198607639501078529
type: snfs