What is 313?

313 is a prime number and the 66th prime number. It is also a Sophie Germain prime, which means that both 2313+1 and 2313-1 are also prime. In Roman numerals, 313 is written as CCCXIII.

In mathematics, 313 is the sum of the first 10 prime numbers (2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 313). It is also a Lucas number, which is the sequence of numbers generated by adding the previous two numbers (similar to Fibonacci numbers), where the sequence starts with 2 and 1.

In terms of geography, 313 is the area code for Detroit, Michigan in the United States. Detroit is known for its contributions to the automotive industry and its cultural significance in music, particularly in the genres of Motown and techno.

In popular culture, 313 is referenced in the Eminem song "Lose Yourself" where he mentions the area code 313 as a representation of his roots in Detroit and the struggles he faced growing up.