2LM

2^2666+1 M

Open composite · C366 · component M

NFS Planning

GNFS Murphy estimate: 1.32e-24
SNFS Murphy score: 1.29e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.34413

Identifiers

Target expression: 2^1333+1+2^667
Target value: 187492638214351905367728143929836909460923493556049254929270348243201169625497097406565086752770904387613872862274463120104257676130223166785541292430997682832165958884661296135022352565464398369822295728683380004007488405419881831197461865615921914002459375412011339115865260488116841468364493913910199493081720476357135374339260892231719034485354091170371953544996182844355241827942131502581043691521
Target link: FactorDB page
Target ID: 1100000000002458186
Target changed: -
Parent query: 2^2666+1
Parent ID: -
Cofactor token: C366
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(62L,86M) 5333.69317.149297. C366

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.29e-18
Skew: 1.34413
Selected: Best

n: 179851955562333690949598496822243383843350466463417538544073759556764808125724450953832930274857446524226288516600830378009706175752259364934009361586824226350304307725244778330938141479084352531055676076882016899656211763053618528748114882430307454934554045365703388803413082099659117474399585004478439946474726135405119788472193736112484891098512550558639396875177
# 2^2666+1 Aurifeuillian M, difficulty: 402.18, skewness: 1.30
# cost: 1.82134e+23, est. time: 86730461.20 GHz days (not accurate yet!)
# Optimized skew: 1.34413 Murphy: 1.29e-18
skew: 1.34413
c8: 1
c4: 4
c0: 8
Y1: -1
Y0: 187072209578355573530071658587684226515959365500928
type: snfs