21 has two prime factors.
Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.
No, 21 and 23 are not twin prime numbers. Twin primes are pairs of prime numbers that differ by 2, such as 3 and 5, or 11 and 13.
The prime numbers between 10 and 21 are 11, 13, 17, and 19.
factors of 21: 3, 7 prime factors of 21: 3, 7
Do you mean, "What is the prime factorization of 21?"
17 is a prime number, but 21 is not (21 = 3 * 7).
if you mean their product is 21, then 7x3=21
11 and 107 are the prime numbers.
Prime numbers go on forever.
21
yes as they are not prime numbers
19 is prime number. 10, 21 and 62 are composite numbers.
Not exactly. Prime numbers can also go into their multiples. The thing about a prime number is only itself and one can go into it.
21, 23, 27 and 29
The even numbers 52 and 94 can be eliminated right away because the only even prime number is 2. That leaves 11, 21, 57, and 107. 3 x 7 = 21, so it is not prime. 3 x 19 = 57, so it is not prime. 11 and 107 are the prime numbers.
It is 23