735 = 3*5*7*7
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A prime number times a prime number is a composite number. Since prime numbers, except for 2, are odd numbers, a prime number times a prime number is usually an odd number. It will only be an even number if one of the prime numbers is 2. A prime number times a prime number will be a number with four factors unless both prime numbers are the same, in which case it will be a square number with only three factors.
There are no two prime numbers that multiply to 24. You need four numbers (even though one appears 3 times).
the least number is 210 which is divisible by four different prime numbers.
The sum of the first four prime numbers is 17.
17 is the only prime number that is the sum of four consecutive prime numbers. 2 + 3 + 5 + 7 = 17