2 x 2 x 3 x 3 x 5 x 7 = 1260
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There are factor trees, fireworks, rainbows, etc., but those are just differences in notation. The unique prime factorization of 260 is 2 x 2 x 5 x 13.
2 x 2 x 3 x 3 x 5 x 7 = 1260
One doesn't have a prime factorization. The prime factorization of 125 is 5 x 5 x 5.
The prime factorization of 14 is 2 x 7. Prime factorization is multiplying two prime numbers by each other to get the original number.
1 is not a prime number, so it wouldn't be present in any prime factorization. Prime numbers don't really have factorizations, that is, the factorization is the number itself. There are prime numbers greater than 100.