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The factors of 45 are 1, 3, 5, 9, 15, 45 Of those, 3 and 5 are prime numbers. The prime factors of 45 are 3 and 5.
The mean write the number as an expression of its prime factors. The prime factors of 210 are 2, 3, 5 and 7. 2 x 3 x 5 x 7 is the prime factorization of 210.
The first three prime numbers are 2, 3, 5. To find the mean, add them up, and divide this sum by how many numbers (3). So (2 + 3 + 5) /3 = 10/3 or approx 3.33
Prime factorization is finding factors of a number and then taking them down to prime numbers ex 135 = 5 x 27 = 5(prime) x 3(prime) X 9 = 5 x 3 x 3 x 3 5 x 3 cubed or 5 x 3 exponent 3
Prime Factors of 2475 = 3, 3, 5, 5, 11