iiii
iiii is a Latin form of quattuor, meaning “four”. It is the numeral.
Found 47 times in the Latin texts on Socratos.
Where it is used
Cicero, Letters to his Friends 7.3.1: … olet in mentem venire illius temporis, quo proxime fuimus una; quin etiam ipsum diem memoria teneo; nam a. d. iiii Id. Mai. Lentulo et Marcello coss., cum in Pompeianum vesperi venissem, tu mihi sollicito animo praesto fuist …
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.