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Is 57 composite or prime?
57 divided by 3 is 19. (Any number in which all the digits add up to equal a number divisible by 3 is divisible by 3. 5+7=12 which is divisible by 3.) And since 57 is divisible by more numbers than just 1 and itself it is a composite number.
Is there more prime numbers then composite numbers?
There are many, many more composite numbers than prime numbers. For example, beyond the number 3, every other number is composite, as it is divisible by 2. Following this, every number ending with a 5 other than 5 itself is composite, as it is divisible by 5, and every third odd number is divisble by 3. There are many complicated divisibility tests for numbers above 5.
Is 57 a prime or composite number?
composite. 57 divided by 3 is 19. (Any number in which all the digits add up to equal a number divisible by 3 is divisible by 3. 5+7=12 which is divisible by 3.) And since 57 is divisible by more numbers than just 1 and itself it is a composite number.57 is a composite number since it can be divided by 3.57/3 = 19Composite.
Are all composite numbers divisible by 2?
No. For example, 21 has factors 1, 3, 7 and 21 making it composite, but is odd (nondivisible by 2).
Why is 39 a composite number?
Because it is divisible by numbers other than 1 and itself. 39 is divisible by 1, 3, 13, 39.
