The number 13

Representation numerals

Greek numeral

ιγʹ

Arabic numeral

١٣

Roman numeral

XIII

Maya numeral

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Chinese numeral

十三

Hebrew numeral

יג
Numeral systems
Binary: 1101
Septimal (base 7): 16
Octal: 15
Hexadecimal: d
Base 24: D
Factorization
13 is a prime number
Sums & differences
13 is the sum of the first 2 squared prime numbers: 13 = 22 + 32
Sum of 2 squares: 13 = 32 + 22
Difference of 2 squares: 13 = 72 - 62
Characteristics
13 is a Fibonacci number
Related primes
The 13th prime number is: 41
Previous prime number: 11 — Next prime number: 17
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