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Answer:
55 is not a Prime number. It is a composite number.
Definition:
A prime number has exactly two factors: 1 (also known as unity) and itself. A composite number has more than two factors; in other words, it has at least one factor besides 1 and itself.
Explanation:
Any number ending in 0 or 5 is evenly divisible by 5, so it has 5 as a factor. Thus, 55 is also divisible by 5, so it is a composite number.
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Is 55 a composite or prime?
Composite 55 / 11 = 5
Is 55 composite or prime?
55 has factors other than 1 and itself, so it is not a prime number. For example, 55 is divisible by 5. (You can tell this because the last digit is a 5. If the last digit - the digit in the ones place - is a 5 or a 0, the number is divisible by 5.) Therefore, 55 is a composite number.composite
Is 17 prime or composite number?
It is prime
Is 86 a prime or composite number?
86 is not a prime number, so is a composite.
Is 168 a prime or a composite number?
No 168 is not a prime number it is a composite number
