2LM

2^2542+1 M

Open composite · C264 · component M

NFS Planning

GNFS Murphy estimate: 1.09e-18
SNFS Murphy score: 5.06e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.18094

Identifiers

Target expression: 2^1271+1+2^636
Target value: 40655985135407808913770470028765959135215868153385565645777782618764093983099063664110310319266891347040709429508910186685092055657513534797421510178427034230172380896051641975676497459615561029187536337901614490118903782625819051400853974067957615464111856537944672528814846404817330791439926914718249919365567161025062746225415654419195599938691651959574127597476257955245230915585
Target link: FactorDB page
Target ID: 1100000000000517614
Target changed: -
Parent query: 2^2542+1
Parent ID: -
Cofactor token: C264
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2,62M,82M) 84948557.82543932965499101.13863074300688628796569.2985066048816935182870333.185151286978029128974632301.C264

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 5.06e-18
Skew: 1.18094
Selected: Best

n: 801197790230722700203542643349201358980976492814721905018123856127262265204708471427206076493058178822216144991277779505904018770274075581206119257043892661480522458074642978022938028316265023985741498950524628157338099496465356019452208310483531277437830777711709
# 2^2542+1 Aurifeuillian M, difficulty: 382.91, skewness: 1.09
# cost: 5.93078e+22, est. time: 28241808.89 GHz days (not accurate yet!)
# Optimized skew: 1.18094 Murphy: 5.06e-18
skew: 1.18094
c8: 1
c4: 2
c0: 2
Y1: -1
Y0: 730750818665451459101842416358141509827966271488
type: snfs