4 equals 2x2, 6 equals 2x3
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68 is a composite number because it has more than two factors and it is not a prime or a square number
A prime number is one whose only factors are 1 and itself.
A factor is a number that divides evenly into another number with no remainder. 3 is a factor of 9. 4 is not a factor of 9.
A factor is two multiples that make an even bigger number. Example factors of 12 are 1,2,3,4,6,12
No.