2LM

2^2606+1 M

Open composite · C352 · component M

NFS Planning

GNFS Murphy estimate: 8.56e-24
SNFS Murphy score: 2.72e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.16878

Identifiers

Target expression: 2^1303+1+2^652
Target value: 174616126543238670907661452824097973723824595619038916127076696830989019596480855165575711757662617031125233380379586592413725029798432408632283371343275236740862912390996977812631384064875914128350430114533210775313360786235633093689227813592709833054269003989540003516014721920129629257851815162690952077062905222982665334156215213097381303935003486415632040835841068976205964785094443925505
Target link: FactorDB page
Target ID: 1100000000001770525
Target changed: -
Parent query: 2^2606+1
Parent ID: -
Cofactor token: C352
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2) 67757.4393717.44886574487867821363369914637. C352

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.72e-18
Skew: 1.16878
Selected: Best

n: 2613434577374223550189643070653541466606361648620700415614814559355132108034610978577005989112717566828684869401471652653824152967638319547931491358519871991088241803134126194932492640694149522183926773282573005334207668661516180880838735081821571747193655726875656882043655995572545743662605094354858256381597990812911234827779429609457794891999879217
# 2^2606+1 Aurifeuillian M, difficulty: 392.54, skewness: 1.09
# cost: 1.04364e+23, est. time: 49697230.76 GHz days (not accurate yet!)
# Optimized skew: 1.16878 Murphy: 2.72e-18
skew: 1.16878
c8: 1
c4: 2
c0: 2
Y1: -1
Y0: 11692013098647223345629478661730264157247460343808
type: snfs