Since there are an infinite number of prime numbers, there are infinite numbers with any given number of prime factors.
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Just multiply the first five prime numbers! 2x3x5x7x11 = 6x35x11 = 210x11 = 2310. Any multiple of this number "has the first five prime numbers as factors", but 2310 is the smallest such number.
7 is a prime number. The only factors of a prime number are 1 and itself, so 7 only has two factors.
To calculate this interesting number you need to use the five smallest prime numbers. A prime number is one which is not evenly divisible by any other number (except itself and 1). The first prime number is 2. then we have 3, 5, 7, 11, 13, 17 and so on. So, if you multiply 2 x 3 x 5 x 7 x 11 you'll get the smallest number with 5 different prime factors.
105 is a composite number because it has factors other than 1 and itself. It is not a prime number. The prime factorization of 105 is 3 x 5 x 7.
5 is a prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.