2LM

2^2482+1 L

Open composite · C292 · component L

Target FactorDB

NFS Planning

GNFS Murphy estimate
2.59e-20
SNFS Murphy raw
4.53e-18
SNFS Murphy normalized (deg 6)
4.53e-18
Preferred method
SNFS
SNFS possible
Yes
SNFS degree
6
SNFS skew
1.56469

Identifiers

Target expression
2^1241+1-2^621
Target value
37863836749836624519685721051661259620651479953327743006663194502484140901918582305414891167792390423864786913161082367119465075114288865399939483197803640952494350165176803223487453031918235929356988035800527972725410228338306689254219848937481425691323142769563338438900262441196149987150711286409925877622160851686858351566008583870783469307017327395097499213318481510401
Target link
FactorDB page
Target ID
1100000000003077181
Target changed
Before 6/8/2026
Parent query
2^2482+1
Parent ID
1000000000012152506
Cofactor token
C292
Imported
Jun 07, 2026, 01:41 AM UTC

Raw pmain126 Factorization

(34L,146L) 1989316024702257101057.3940639336036781180053103392398337.C292

SNFS Polynomial

Degree
6
Raw Murphy
4.53e-18
Normalized (deg 6)
4.53e-18
Skew
1.56469
Selected
Best
n: 3916976792890831081044189640147942449249368307147373095200447500338609591872107640485256155954884613060991964267672678003284846387984401860071588188854279312545020898810349711363787008218078430606125207075927853205274692356496341100050428241391202011472563013876591481151779805941677522906369
# 2^2482+1 Aurifeuillian L, difficulty: 373.88, skewness: 1.12
# cost: 3.46428e+22, est. time: 16496581.71 GHz days (not accurate yet!)
# Optimized skew: 1.56469 Murphy: 4.53e-18
skew: 1.56469
c6: 1
c3: -2
c0: 2
Y1: -1
Y0: 205688069665150755269371147819668813122841983204197482918576128
type: snfs