2LM

2^2878+1 M

Open composite · C360 · component M

NFS Planning

GNFS Murphy estimate: 2.94e-24
SNFS Murphy score: 1.86e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.09355

Identifiers

Target expression: 2^1439+1+2^720
Target value: 15211209943731037059535567464979244516021593351122997993978956502918420683608033678661572120429938534772753430839817601321172705542152606726894539332201701529964104344740592610274629092006793100167895669569813779242118616455581333954472592682532191010745923552030723459553779780401988506490175991303985549643207377918623543368693171557548250221527592155622901957914977771948986507145288687339349019593914275328355034913695992553406465
Target link: FactorDB page
Target ID: 1100000000002614635
Target changed: -
Parent query: 2^2878+1
Parent ID: -
Cofactor token: C360
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2) 34537.58974565781.370186087088538086232557.11717477243342608590581691612757517.C360

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.86e-19
Skew: 1.09355
Selected: Best

n: 344342146580622524471546395038980784786052447677980320548712243236783346873374900931279302749914336366318238980868483897435314501859498068168427271784828793867568833975684870499218208417449178912263796063190940975352954425039452626401730958910600227826022326802660740573902279331988619275890218826643108260130266350184310667014536338338733550849547732160012201
# 2^2878+1 Aurifeuillian M, difficulty: 433.48, skewness: 1.09
# cost: 1.05463e+24, est. time: 502203596.69 GHz days (not accurate yet!)
# Optimized skew: 1.09355 Murphy: 1.86e-19
skew: 1.09355
c8: 1
c4: 2
c0: 2
Y1: -1
Y0: 1532495540865888858358347027150309183618739122183602176
type: snfs