2^1463-1

Open composite · C249

NFS Planning

GNFS Murphy estimate: 8.07e-18
SNFS Murphy score: 3.16e-18
Preferred method: Similar
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.42951

Identifiers

Target expression: 2^1463-1
Target link: FactorDB page
Target ID: 1000000000000001463
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C249
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(7,11,19,77,133,209) 2927.1478815031.8612055962441945623327451972844118959199682536269165337730366471.C249

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 3.16e-18
Skew: 1.42951
Selected: Best

n: 689227669532552481063551459039040302959566976522743122165631986591244785538382718421596772750997727104942429059080138229943216749247666132851748316095312344324391702326223771022106488301157897862509788241533945401928296421788910818754904329655776113
# 2^1463-1, difficulty: 377.49, skewness: 1.00
# cost: 4.29948e+22, est. time: 20473702.92 GHz days (not accurate yet!)
# Optimized skew: 1.42951 Murphy: 3.16e-18
skew: 1.42951
c6: 1
c5: 1
c4: 1
c3: 1
c2: 1
c1: 1
c0: 1
Y1: -1
Y0: 822752278660603021077484591278675252491367932816789931674304512
type: snfs