2+(odd)

2^1451+1

Open composite · C426

NFS Planning

GNFS Murphy estimate: 4.37e-28
SNFS Murphy score: 1.21e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.95174

Identifiers

Target expression: 2^1451+1
Target link: FactorDB page
Target ID: 1000000000012151475
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C426
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1) 8707.14626081. C426

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.21e-19
Skew: 0.95174
Selected: Best

n: 163081964746018232606456289042758174254966313730969383662722115128170909723778318075837536560727299696324254504762598413544532507280512005854863080662432610389943919810906591002085734405378993286862367853385784534502816778638201140061729160073661975398692913355874035562470305990120249027790138055823265654289790123685034743964888024359904318428226015590338184113144315995589372641633905780272472190803552277156988951517569049
# 2^1451+1, difficulty: 436.79, skewness: 1.22
# cost: 1.26416e+24, est. time: 601982971.78 GHz days (not accurate yet!)
# Optimized skew: 0.95174 Murphy: 1.21e-19
skew: 0.95174
c7: 1
c0: 4
Y1: -205688069665150755269371147819668813122841983204197482918576128
Y0: 1
type: snfs