The number 19

Representation numerals

Greek numeral

ιθʹ

Arabic numeral

١٩

Roman numeral

XIX

Maya numeral

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Chinese numeral

十九

Hebrew numeral

יט
Numeral systems
Binary: 10011
Septimal (base 7): 25
Octal: 23
Hexadecimal: 13
Base 24: J
Factorization
19 is a prime number (Gaussian prime)
Sums & differences
Difference of 2 squares: 19 = 102 - 92
Characteristics
Related primes
The 19th prime number is: 67
Previous prime number: 17 — Next prime number: 23
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