Abbott-Smith Manual Greek Lexicon
ἀριθμός (G706)
18 ἀριθμός , -οῦ, ὁ , [in LXX chiefly for מִסְפָּר ;] number , a number : Lk 22:3 , Jo 6:10 , Ac 4:4 5:36 6:7 11:21 16:5 , Ro 9:27 , Re 5:11 7:4 9:16 13:17 , 18 15:2 20:8 (for exx. of mystical use in π. , v. MM, s.v.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain