2 3 5 7 11 13 17 19 23
2 and 5. The factors of 50 (i.e., the whole numbers that evenly divide into 50) are 2, 5, 10, 25, and 50. Of these numbers, only 2 and 5 are prime numbers.
2 and 3 are prime numbers.
The only two consecutive whole numbers that are prime numbers are 2 and 3. Otherwise, every second consecutive whole number in sequence is even, and being multiples of 2, they cannot be prime.
The only even prime number is 2. All the rest of the even numbers are composite.
2 and 3.
5 and 2 are the only prime numbers that end in a 5 or 2. A prime number is by definition only divisible by 1 and itself, and all other whole numbers ending in 5 or 2 are divisible by 5 or 2, respectively. Numbers that are not whole numbers cannot be prime.
Prime factors of 10 are 2 and 5 Prime factor of 25 is 5
23 + 2 = 25
'25' is odd, all right, but not prime. (It can be divided by 1, 5, and 25) By the way, prime numbers must be odd numbers. All even numbers can be divided by 2, at least, and are therefore not prime.
The only prime number in that whole range is 2.
25 of them.
There are 2 prime numbers between 25 and 35: 29 31.