2LM

2^2498+1 M

Open composite · C271 · component M

Target FactorDB

NFS Planning

GNFS Murphy estimate
4.27e-19
SNFS Murphy raw
3.73e-18
SNFS Murphy normalized (deg 6)
3.73e-18
Preferred method
SNFS
SNFS possible
Yes
SNFS degree
6
SNFS skew
1.24269

Identifiers

Target expression
2^1249+1+2^625
Target value
9693142207958175877039544589225282462886778868051902209705777792635940070891157070186212138954851948509385449769237085982583059229257949542384507698637732083838553642285261625212787976173435386761201233268356179001619354163932223039388677288073561407773636592542989895808922439841090916371132603931265271628112410827959469872550273961254968813991818792396806238777038019231745
Target link
FactorDB page
Target ID
1100000000000427273
Target changed
Before 6/8/2026
Parent query
2^2498+1
Parent ID
1000000000012152522
Cofactor token
C271
Imported
Jun 07, 2026, 01:41 AM UTC

Raw pmain126 Factorization

(2) 529577.5205642570488111720493819683480805334720301.341204018509113159482346004141300962381374625870169185233.C271

SNFS Polynomial

Degree
6
Raw Murphy
3.73e-18
Normalized (deg 6)
3.73e-18
Skew
1.24269
Selected
Best
n: 2060995209075783028940901945060334455727314276238379410859795851954958656259601006609098059565728947887189924100398469753275162022630142693825522520333658620512622741147635160135916228281849615000308639276057161086912778859485444126454049430948631521656102691322382672489
# 2^2498+1 Aurifeuillian M, difficulty: 375.99, skewness: 0.89
# cost: 3.93004e+22, est. time: 18714489.73 GHz days (not accurate yet!)
# Optimized skew: 1.24269 Murphy: 3.73e-18
skew: 1.24269
c6: 2
c3: 2
c0: 1
Y1: -1
Y0: 411376139330301510538742295639337626245683966408394965837152256
type: snfs