The least number that has 2, 3, and 4 as factors is 12.
The number is ' 2 '. Its factors are 1 and 2.
12
12
2 (1 and 2)
It has at least 2 factors: 7 and 603.
64 is the least number having exactly 7 factors: 1, 2, 4, 8, 16, 32, and 64.
Yes. To be composite, the first number has at least 2 prime factors, the second number also has at least prime factors; the product of the two will have at least 4 prime factors, so it must be a composite number.
Every number has at least two factors . . . itself, and the number ' 1 ' .If those are the only factors it has, and no others, then it's a prime number.
1, 2, 3 and 4
at least three factors.
2 factors, but a prime number has only two factors (itself and one). Note that 1 is not considered to be a prime number.