12^371+1

Open composite · C300

NFS Planning

GNFS Murphy estimate: 8.88e-21
SNFS Murphy score: 7.33e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.41325

Identifiers

Target expression: 12^371+1
Target link: FactorDB page
Target ID: 1100000000024338814
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C300
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1,7,53) 4196011.26740939.385841895313171137058303. C300

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 7.33e-17
Skew: 1.41325
Selected: Best

n: 126732559909313919409709284691773613409316449226370197618816337612647033285605677966355449261191722738648007369993919716385184598397272043470936822325184853397498233385662357792399835745714149238461702055778173341263841117132486578588055666955807238212413952068419481009869152906548718199138842242923
# 12^371+1, difficulty: 343.18, skewness: 1.00
# cost: 5.24153e+21, est. time: 2495968.14 GHz days (not accurate yet!)
# Optimized skew: 1.41325 Murphy: 7.33e-17
skew: 1.41325
c6: 1
c5: -1
c4: 1
c3: -1
c2: 1
c1: -1
c0: 1
Y1: -1
Y0: 1572555712320371480831006735579195460947411969842738102272
type: snfs