2+(odd)

2^1327+1

Open composite · C396

NFS Planning

GNFS Murphy estimate: 2.40e-26
SNFS Murphy score: 2.09e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.71178

Identifiers

Target expression: 2^1327+1
Target link: FactorDB page
Target ID: 1000000000012151351
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C396
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1) 7963. C396

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.09e-18
Skew: 1.71178
Selected: Best

n: 122632695889289987917901638783695496267191158558887756217081049491398479442353892878629473000629803719555727048978127433196409485099197830843655351594220720593268579998025566248471022597655038910313255523150669615094606688053720891409560428137001526767820846699231021649490528406991803017921685192213197643272011200151607844556593729297084892723364966991340468545917787808811170721328552320240561
# 2^1327+1, difficulty: 400.37, skewness: 1.35
# cost: 1.64178e+23, est. time: 78179807.62 GHz days (not accurate yet!)
# Optimized skew: 1.71178 Murphy: 2.09e-18
skew: 1.71178
c7: 1
c0: 8
Y1: -1
Y0: 1569275433846670190958947355801916604025588861116008628224
type: snfs