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Divide the number starting from the smallest Prime number, which is 2.

140 / 2 = 70

70 / 2 = 35

140 can be divided by 2 twice only

Next we repeat with the next prime number, which is 3.

35 is not divisible by 3 so we move on to the next prime number, which is 5

35 / 5 = 7

35 can be divided by 5 once only

Next prime number is 7

7 / 7 = 1 [Your objective is to get a 1]

Working could be:

140 / 2 = 70

70 / 2 = 35

35 / 5 = 7

7 / 7 = 1

Prime factorization of 140 = 2 x 2 x 5 x 7 or 2^2 x 5 x 7

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11y ago

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