LXXVII

LXXVII is the Roman numeral for the number seventy‑seven (77). The numeral is composed of the symbols L (50), X (10), and VII (7), arranged in descending order to signify the additive value of each symbol. In classical Roman counting systems, numbers were written using this additive principle, and LXXVII would typically be encountered in inscriptions, papyri, or manuscripts where Roman numerals were used to denote dates, chapters, or monarchial ordinal numbers.

In medieval and early modern Europe, the use of Roman numerals persisted in various contexts, including the enumeration of kings (e.g., Charles LXXVII), the numbering of centuries, and on the faces of clocks. The number 77 itself appears as a milestone in historical calendars; for example, the year 77 AD in the Julian calendar falls within the reign of Emperor Vespasian. Likewise, many church directories and lexicons number their entries with Roman numerals, and the seventieth‑seventh entry would be labeled LXXVII.

The numeral also appears in the notation of chapters and verses in religious texts. In the Book of Psalms, for instance, Psalm 77 is commonly cited; in printed editions, it may be denoted as LXXVII. In modern usage, Roman numerals remain popular for representing years on buildings, ship hull numbers, or to indicate titles such as "PlayStation 7" (which is sometimes stylized as PS7 but historically referenced in catalogs as LXXVII for cataloging purposes).

While the Roman numeral system is largely supplanted by Arabic numerals in everyday life, LXXVII remains a standard reference in academic, religious, and historical contexts where classical numbering conventions are preserved. Its inclusion in indexed listings, bibliographies, and ceremonial documents continues to honor the legacy of Roman numeration.