2 x 2 x 2 x 2 x 5 x 7 = 560
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560 is a multiple of 7. It goes in 80 times. 91 is a multiple of 7. It goes in 13 times.
550 275,2 55,5,2 11,5,5,2
Yes.
It's like a day without sunshine. All that means is to write out the repeated prime factors. The prime factorization of 900 without exponents: 2 x 2 x 3 x 3 x 5 x 5 The prime factorization of 900 with exponents: 22 x 32 x 52
The prime factorization of 81 is 3 * 3 * 3 * 3 or 3^4 The prime factorization for 81 is 3 times 3 times 3 times 3