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
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.)
91,97 are the two large prime numbers below 100.