2+(odd)

2^1499+1

Open composite · C354

NFS Planning

GNFS Murphy estimate: 6.56e-24
SNFS Murphy score: 4.93e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.46055

Identifiers

Target expression: 2^1499+1
Target link: FactorDB page
Target ID: 1000000000012151523
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C354
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1) 44971.2143571.958241747.353669333641009.6783744570276099702542784604601.29170128974784420528168967798403.C354

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 4.93e-20
Skew: 1.46055
Selected: Best

n: 904256209629463666533787517933467827183989787079705704677906158573161699975098328328533788835378329929556481688520106997347360954294687035103130793111199879133942489503715014554658661843672953747288369301159843453521549258447438417835037190812617076252880463518837021733779046969215447299164094357603937356427269698969228541644159726608770879213796871547
# 2^1499+1, difficulty: 451.24, skewness: 1.30
# cost: 2.7612e+24, est. time: 1314857072.81 GHz days (not accurate yet!)
# Optimized skew: 1.46055 Murphy: 4.93e-20
skew: 1.46055
c8: 1
c0: 8
Y1: -196159429230833773869868419475239575503198607639501078528
Y0: 1
type: snfs