10^428+1

Open composite · C350

NFS Planning

GNFS Murphy estimate: 1.12e-23
SNFS Murphy score: 2.21e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.08712

Identifiers

Target expression: 10^428+1
Target link: FactorDB page
Target ID: 1000000000008550452
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C350
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(4) 857.17977.17845889.4724110777.1174728377118274186697.610278304060012464870755221969.C350

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.21e-19
Skew: 1.08712
Selected: Best

n: 10738283895636864387866976573557745576018187594291954782787849301909577260783650847235002924340274308378978311971467705192006628665769574153804407563574822301692530131269491851287872571210307047599364904372904588666108439685241112261760194488314205682948811296225663861489834852165356111139770691002664065010926512128081532539858160853562406527883921
# 10^428+1, difficulty: 428.00, skewness: 1.39
# cost: 7.79781e+23, est. time: 371324330.58 GHz days (not accurate yet!)
# Optimized skew: 1.08712 Murphy: 2.21e-19
skew: 1.08712
c7: 1
c0: 10
Y1: -10000000000000000000000000000000000000000000000000000000000000
Y0: 1
type: snfs