2LM

2^2986+1 M

Open composite · C445 · component M

NFS Planning

GNFS Murphy estimate: 3.46e-29
SNFS Murphy score: 5.32e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.17352

Identifiers

Target expression: 2^1493+1+2^747
Target value: 274020797737765927715840530939694203074406374065084600188092172068679405082525954716070944426445072356665237553089355604681988663605234060579461241546911725374140285041633572378803146184245804269817829565157333042588714517695633599294751133446543357224776613027168520566034429105514436620421177119947305037637092680470825505393335618279781794962391117077942446505424484640968894086473126904890879134712759666351598046075008700324365814156974222213121
Target link: FactorDB page
Target ID: 1100000000001210708
Target changed: -
Parent query: 2^2986+1
Parent ID: -
Cofactor token: C445
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

214993. C445

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 5.32e-20
Skew: 1.17352
Selected: Best

n: 1274556835514486181949368262872252599267912788160938263981116464576425302602996165996432183496416498940268927607360963401980476869503816685098869458758711797007996934977574025102227264070206026567459543171904820355028835904869617147045490473859815702021817515115229428707141298114424360888127414008583093578102973959481590123368368357480391431173996907238572634948228475536268130062249128599028243406588864132095454484913502766715036369356091697
# 2^2986+1 Aurifeuillian M, difficulty: 450.34, skewness: 1.30
# cost: 2.63079e+24, est. time: 1252755122.62 GHz days (not accurate yet!)
# Optimized skew: 1.17352 Murphy: 5.32e-20
skew: 1.17352
c8: 1
c4: 4
c0: 8
Y1: -1
Y0: 196159429230833773869868419475239575503198607639501078528
type: snfs