10+

10^404+1

Open composite · C400

Target FactorDB

NFS Planning

GNFS Murphy estimate
1.41e-26
SNFS Murphy score
1.13e-18
Preferred method
SNFS
SNFS possible
Yes
SNFS degree
7
SNFS skew
0.81475

Identifiers

Target expression
10^404+1
Target link
FactorDB page
Target ID
1000000000008550428
Target changed
-
Parent query
Same as target
Parent ID
-
Cofactor token
C400
Imported
Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(4) C400

SNFS Polynomial

Degree
7
Murphy
1.13e-18
Skew
0.81475
Selected
Best
n: 9999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990000999900009999000099990001
# 10^404+1, difficulty: 405.40, skewness: 1.04
# cost: 2.19027e+23, est. time: 104298588.24 GHz days (not accurate yet!)
# Optimized skew: 0.81475 Murphy: 1.13e-18
skew: 0.81475
c7: 25
c0: 32
Y1: -5000000000000000000000000000000000000000000000000000000000
Y0: 1
type: snfs