2+(4k)

2^1444+1

Open composite · C401

NFS Planning

GNFS Murphy estimate: 1.23e-26
SNFS Murphy score: 1.43e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.95210

Identifiers

Target expression: 2^1444+1
Target link: FactorDB page
Target ID: 1000000000012151468
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C401
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(4,76) 196605550033. C401

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.43e-19
Skew: 0.95210
Selected: Best

n: 32767121751598035525012459830729568381033395401279123595004396612500586357321159018951085461791802162451407479543586577017064190685334698537774968773134596136692611980818574093510824942400264305040787687102453675239976421057153252375592222572906784983934951199433043882085065451400943520412619524955205197201953827285346831563205470749545645700971226709431995948553955734368736619294866545866910915377
# 2^1444+1, difficulty: 434.69, skewness: 1.22
# cost: 1.12658e+24, est. time: 536464987.27 GHz days (not accurate yet!)
# Optimized skew: 0.95210 Murphy: 1.43e-19
skew: 0.95210
c7: 1
c0: 4
Y1: -102844034832575377634685573909834406561420991602098741459288064
Y0: 1
type: snfs