10-

10^437-1

Open composite · C363

NFS Planning

GNFS Murphy estimate: 1.97e-24
SNFS Murphy raw: 7.99e-20
SNFS Murphy normalized (deg 6): 4.99e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.04892

Identifiers

Target expression: 10^437-1
Target link: FactorDB page
Target ID: 1100000000013095690
Target changed: Before 6/8/2026
Parent query: Same as target
Parent ID: -
Cofactor token: C363
Imported: Jun 07, 2026, 01:42 AM UTC

Raw pmain126 Factorization

(1,19,23) 23599.81283.2152970896196020817900437. C363

SNFS Polynomial

Polynomial

Degree: 7
Raw Murphy: 7.99e-20
Normalized (deg 6): 4.99e-20
Skew: 1.04892
Selected: Best

n: 217926992728085915562701176046070666676646669205087910160378510920116729852458131715220948713950980853656413841417777554788695736275256174313142871645762430631415507167913307135977070496335349521726657706610777651557213057438370016639072355242237741481406872167861146144746273497341981820000809073256217857571279553925515395264714583123800324845979872243951881479
# 10^437-1, difficulty: 438.20, skewness: 1.34
# cost: 1.36521e+24, est. time: 650097750.85 GHz days (not accurate yet!)
# Optimized skew: 1.04892 Murphy: 7.99e-20
skew: 1.04892
c7: 16
c0: -125
Y1: -200000000000000000000000000000000000000000000000000000000000000
Y0: 1
type: snfs