25 of them.
102
The prime numbers of 100 are: 2, 2, 5 and 5
25 of them.
25 of them (including 2).
5
102
The prime numbers of 100 are: 2, 2, 5 and 5
The prime numbers (factors) of 100 are: 2 and 5
25 of them.
25 of them.
The only even prime number (not only from 1 to 100, but in general) is 2. All other even numbers are multiples of 2, and therefore, by definition, not prime numbers.
25 of them (including 2).
5
2 and 3 are the only consecutive prime numbers.
The prime factors of 100 are: 2, 5
There are no three prime numbers that multiply to exactly 100, as 100 can be factored into its prime components, which are 2 and 5. The prime factorization of 100 is (2^2 \times 5^2), meaning it only consists of the primes 2 and 5. Since prime numbers must be distinct and cannot be repeated in this context, it is impossible to find three prime numbers that multiply to 100.
Search the Internet for a list of prime numbers - the Wikipedia article on prime numbers might list a few. All numbers between 2-100 that are not prime, are composite. (The number is not counted as prime, nor as composite.)