30 (2 x 3 x 5) and 42 (2 x 3 x 7) are the only numbers less than 60 having three different prime factors.
There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.
30
The only two-digit number that has three different prime factors is 2 x 3 x 5, which equals 30. This number has the prime factors 2, 3, and 5, all of which are distinct prime numbers. Any other two-digit number with three prime factors would have at least one repeated prime factor, making it not have three different prime factors.
How about 105 whose prime factors are 3, 5 and 7
Just multiply the first three prime numbers together.
30 does.
105
There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.
30 is the first with three distinct prime factors.
30 has factors of 2,3 and 5
Prime numbers have two factors. Prime squares have three factors. Square numbers have an odd number of factors but that number varies.
532