70 = 2 x 35 = 2 x 5 x 7.
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As a product of its prime factors: 70 = 2*5*7
2 x 5 x 7
No because as a product of its prime factors: 2*5*7 = 70
Any non-zero product of 70 must be divisible by 70 and so it cannot be a prime.
As a product of its prime factors: 2*5*7 = 70 Note that at least two or more numbers are needed to find their HCF