12-

12^383-1

Open composite · C349

NFS Planning

GNFS Murphy estimate: 1.28e-23
SNFS Murphy score: 7.16e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.29668

Identifiers

Target expression: 12^383-1
Target link: FactorDB page
Target ID: 1100000000013092212
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C349
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 454244911989659062011574909.7573037149551499058339444500199189531.C349

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 7.16e-19
Skew: 1.29668
Selected: Best

n: 5603564720624422431005661417178499020688647087182812448253239712286530322104860132691784324173978629107283520411844533570704591187458681560077025444015859912455991284155032218651064670131450345612203880076840593359468555112295761398155655520802496351398380952896602183322184868595836186329062689107502906918748873256763314233830272890898394336901683
# 12^383-1, difficulty: 414.28, skewness: 1.02
# cost: 3.62565e+23, est. time: 172650198.93 GHz days (not accurate yet!)
# Optimized skew: 1.29668 Murphy: 7.16e-19
skew: 1.29668
c7: 8
c0: -9
Y1: -1
Y0: 113224011287066746619832484961702073188213661828677143363584
type: snfs