2LM

2^2306+1 L

Open composite · C287 · component L

NFS Planning

GNFS Murphy estimate: 5.04e-20
SNFS Murphy score: 5.29e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.23150

Identifiers

Target expression: 2^1153+1-2^577
Target value: 122344654985694138944064787438411453618271627486881598100390795141839395592183916643573727876315943584631689013747018093088918016710072301300667233780421251372128945942961243611558763447822840678219063584989275773913537353725987569051984078518149832626065343306947405257159626011688451963947412714409785861422672531245358882743020403605289796894721
Target link: FactorDB page
Target ID: 1100000000002115052
Target changed: -
Parent query: 2^2306+1
Parent ID: -
Cofactor token: C287
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

152197.67796401.487690428661.375990376657230739677009027023959553.C287

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 5.29e-17
Skew: 1.23150
Selected: Best

n: 64662323658823242692439461884541464706860837165487546832738283570486806465232256044413765571484283922127616810424046587064596077183584544232516034918979920262442524791042464316636545681077590544414207434901298638802160259512573165882589016508814597507497282245993626712821512555173733321
# 2^2306+1 Aurifeuillian L, difficulty: 347.09, skewness: 0.89
# cost: 6.70269e+21, est. time: 3191756.53 GHz days (not accurate yet!)
# Optimized skew: 1.23150 Murphy: 5.29e-17
skew: 1.23150
c6: 2
c3: -2
c0: 1
Y1: -1
Y0: 6277101735386680763835789423207666416102355444464034512896
type: snfs