11-

11^361-1

Open composite · C357

NFS Planning

GNFS Murphy estimate: 4.39e-24
SNFS Murphy raw: 7.22e-18
SNFS Murphy normalized (deg 6): 4.51e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 3.53199

Identifiers

Target expression: 11^361-1
Target link: FactorDB page
Target ID: 1000000000019012179
Target changed: Before 6/8/2026
Parent query: Same as target
Parent ID: -
Cofactor token: C357
Imported: Jun 07, 2026, 01:43 AM UTC

Raw pmain126 Factorization

(1,19) C357

SNFS Polynomial

Polynomial

Degree: 7
Raw Murphy: 7.22e-18
Normalized (deg 6): 4.51e-18
Skew: 3.53199
Selected: Best

n: 143317203096473215028517736463682989096679718778971288896977293295920916450072794503090531142294581105989998151878562444279487688020878112205195507727751612955572857247994284428883958827851497763637388771601446855311858875580305729335669599451333086591143576649556006408381440632465440765948336216291406007326692098529964487041752508081590199215337805872509
# 11^361-1, difficulty: 379.07, skewness: 2.79
# cost: 4.72229e+22, est. time: 22487115.92 GHz days (not accurate yet!)
# Optimized skew: 3.53199 Murphy: 7.22e-18
skew: 3.53199
c7: 1
c0: -1331
Y1: -1
Y0: 1420429319844313329730664601483335671261683881745483121
type: snfs