2LM

2^2958+1 M

Open composite · C266 · component M

NFS Planning

GNFS Murphy estimate: 8.33e-19
SNFS Murphy score: 7.04e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.95547

Identifiers

Target expression: 2^1479+1+2^740
Target value: 16724902205674189924062532405987195011865623417058386241948985111613733220369015790775814479153141623331618502996176489543578409643874149205289382418634748863167742006935642845385934215347033952015248386545247378087690095079934783039800123188574963997973610765788967296711655353491294099271122349618864106547327890010575512133031919862909919118181543935929151056543005768442736090224965969958972854190646456409641222514057809705398858852402724865
Target link: FactorDB page
Target ID: 1100000000002912593
Target changed: -
Parent query: 2^2958+1
Parent ID: -
Cofactor token: C266
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2,34M,58L,102L,174M,986L) 11833. C266

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 7.04e-16
Skew: 0.95547
Selected: Best

n: 11204467554037574991314298335849208170169008097737770810577120917135221667335336163097513858736473633996329716857053256115200129040210778143265291554737310807897571069458593504072121403472915926143607725891882082146006198295027371153611290672280424586455497769415177
# 2^2958+1 Aurifeuillian M, difficulty: 296.82, skewness: 0.84
# cost: 2.46867e+20, est. time: 117555.88 GHz days (not accurate yet!)
# Optimized skew: 0.95547 Murphy: 7.04e-16
skew: 0.95547
c8: 4
c6: 4
c4: 2
c2: 2
c0: 1
Y1: -1
Y0: 10633823966279326983230456482242756608
type: snfs