10^398+1

Open composite · C335

NFS Planning

GNFS Murphy estimate: 8.29e-23
SNFS Murphy score: 2.13e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.76615

Identifiers

Target expression: 10^398+1
Target link: FactorDB page
Target ID: 1000000000008550422
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C335
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(2) 581140178513809.25318162873760593102299508147845874260505144789.C335

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.13e-18
Skew: 1.76615
Selected: Best

n: 67292325093840941702452336152717187769859524344854817604835853674827445974242136455639111687691942619728463775732346313566765262678470951176421368664691135788525049080388953639908810263117786405466560551867541233731642781359519447054272029092477423286052787701962328127011407504613372075046529105252072219957114207346228531079243938601
# 10^398+1, difficulty: 399.00, skewness: 1.39
# cost: 1.5172e+23, est. time: 72247737.32 GHz days (not accurate yet!)
# Optimized skew: 1.76615 Murphy: 2.13e-18
skew: 1.76615
c7: 1
c0: 10
Y1: -1
Y0: 1000000000000000000000000000000000000000000000000000000000
type: snfs