#### Answer

Composite number

#### Work Step by Step

A prime number is a number for which we cannot multiply any two whole numbers (besides the number and 1) to get that number. A composite number is any other number; in other words, a composite number is a number you can get by multiplying two whole numbers (not including the number and one). 19 times 3 is 57, so we know that 57 is a composite number.