2+(4k)

2^1448+1

Open composite · C395

NFS Planning

GNFS Murphy estimate: 2.75e-26
SNFS Murphy score: 1.29e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.41417

Identifiers

Target expression: 2^1448+1
Target link: FactorDB page
Target ID: 1000000000012151472
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C395
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(8) 314001128134468111824455232504871308929. C395

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.29e-19
Skew: 1.41417
Selected: Best

n: 96509349800250585646357091500941374926366038443135002664130875753238411245025357499914780330123824381984511175385221384800801572774604276537059692195287529688704663546719499867243183342064675511461958066689099163798934323940560339394689227406726241145660131792572707428240859160712451953961239636514524269203996114118201505446734970138002966462505446941092851098502230061333717680206495639203969
# 2^1448+1, difficulty: 436.19, skewness: 1.10
# cost: 1.22326e+24, est. time: 582506976.88 GHz days (not accurate yet!)
# Optimized skew: 1.41417 Murphy: 1.29e-19
skew: 1.41417
c7: 1
c0: 2
Y1: -1
Y0: 205688069665150755269371147819668813122841983204197482918576128
type: snfs