DCXVII

DCXVII is the Roman numeral for the integer 617. It is formed by adding the values of D (500), C (100), X (10), V (5), and II (2) to yield 617. Roman numerals like DCXVII are commonly found in inscriptions and chronologies to denote years, volumes, or enumerations.

617 is a prime number. It is odd and greater than 2. It is part of a twin prime pair with 619, since both numbers are prime and differ by 2.

As a year designation, 617 CE places the events of that time in the early seventh century during Late Antiquity and the early medieval period, a time of political and cultural change across different regions.

In contemporary usage, the number 617 is also known as the area code for Boston, Massachusetts, reflecting its role in U.S. telephone numbering and regional identification.