number 21 is prime
21 is a composite number, not a prime, having prime factors 3x7.
As a product of its prime factors: 2*2*2*5 = 40 or as 23*5 = 40
40 out of 103 is a fraction. Prime numbers are whole numbers. A fraction cannot be a prime number, so 40 out of 103 is not a prime number.
21 is the product of two prime numbers, three and seven. A prime number is defined as a number divisible only by one or itself. So ... NO ... 21 is not a prime number.
21 x 2 does not equal 40. 21 is not a prime number.
The prime numbers from 21 to 40 are 23, 29, 31, and 37.
number 21 is prime
21 is a composite number, not a prime, having prime factors 3x7.
The prime numbers between 21 and 40 are: 23 29 31 37.
As a product of its prime factors: 2*2*2*5 = 40 or as 23*5 = 40
11 is a prime number but 21 is not a prime number as it is divisible by 3.
They are: 23 29 31 and 37 which makes four of them
40 out of 103 is a fraction. Prime numbers are whole numbers. A fraction cannot be a prime number, so 40 out of 103 is not a prime number.
A prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.No, 21 is not a prime number.21 is divisible by 1, 3, 7, & 21No. 21=3*7
21 is the product of two prime numbers, three and seven. A prime number is defined as a number divisible only by one or itself. So ... NO ... 21 is not a prime number.
Yes.