# Quick Answer: Is 15 A Coprime Number?

## What is the smallest prime number?

The first 1000 prime numbers131–202521–40738341–6017919161–8028330714 more rows.

## Are 32 and 34 Coprime numbers Why?

When the HCF of two or more numbers is 1, then they are called co-prime numbers. The HCF of 32 and 34 is 2, which ≠ 1. So, they are not co-prime numbers. Hope it helps.

## What is a Coprime number?

A Co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their highest common factor (HCF) will be 1. Co-prime numbers are also known as relatively prime or mutually prime numbers. It is important that there should be two numbers in order to form co-primes.

## Are 9 and 10 Coprime numbers?

9 and 10 are the coprime numbers .

## What is the HCF of 120 144 and 216?

Hence, the HCF of 120,144 and 216 is 24.

## What is the HCF of 18 54 and 81?

9The HCF of 18, 54 and 81 is 9.

## Is 15 a co prime number?

So, by this definition, 15 and 8 are co-prime, but 15 and 9 are not. There are 4 positive integers less than 12 and co- prime with 12. They are 1, 5, 7, and 11. There are 8 positive integers less than 15 and co- prime with 15.

## Is 15 and 37 Coprime numbers?

Factors of 15 are 1, 3, 5 and 15. Factors of 37 are 1 and 37. Therefore, 1 is the only common factor of 15 and 37 which means that 15 and 37 are co-prime.

## Is 9 a Coprime number?

5 and 9 are coprime numbers. The sum of two coprime numbers is always coprime with their product. For example: 5 and 9 are coprime numbers.

## Is 4 and 9 are Coprime numbers?

Relatively prime numbers (coprimes) are numbers that share no common divisor (except 1). Numbers 4 and 9 share the number 1 as the only common divisor and so are coprimes.

## Is 18 and 25 are Coprime numbers?

Two integers a and b are said to be coprimes if they have no common factors other than 1 and the number itself. … 18 and 25 have no common factor other than 1. =>HCF(18,25)=1. Yes, (18,25) are coprime numbers.

## Is 15 and 21 relatively prime?

Regarding the number 15 and 21, they are not relatively primes, since besides number 1 they also have number 3 as a common divisor.

## Are 2 and 15 Coprime numbers?

Consider any consecutive number such as 2, 3 or 3, 4 or 14 or 15 and so on; they have 1 as their HCF. The sum of any two co-prime numbers is always coprime with their product.

## What is the number of Coprime in 2048?

The prime factorization of 2,048 is 211. Since it has a total of 11 prime factors, 2,048 is a composite number.