2^1325-1

Open composite · C282

NFS Planning

GNFS Murphy estimate: 9.83e-20
SNFS Murphy score: 2.18e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.79688

Identifiers

Target expression: 2^1325-1
Target link: FactorDB page
Target ID: 1000000000000001325
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C282
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(5,25,53,265) 71551.1067951.2594351.16289551.19525201. C282

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.18e-16
Skew: 0.79688
Selected: Best

n: 181011773786335602519462007226780800623378766090845786685746949679593487977091329147243726956063248425256112629989306597102623330288271777957335110230781105863826845742596113986380585913476395176275193769852257466625151334911282488780992802607652862539069774468080490413310934771201
# 2^1325-1, difficulty: 319.09, skewness: 0.71
# cost: 1.10788e+21, est. time: 527559.82 GHz days (not accurate yet!)
# Optimized skew: 0.79688 Murphy: 2.18e-16
skew: 0.79688
c8: 16
c6: 8
c4: 4
c2: 2
c0: 1
Y1: -1
Y0: 5444517870735015415413993718908291383296
type: snfs