17875 = 5 x 3575
3575 = 5 x 715
725 = 5 x 143
143 = 11 x 13
The only prime factors are 5 11 and 13
Full factorisation = 53 x 11 x 13
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The purpose of a factor tree is to divide a number into prime factors. 1 is not a prime number.
19 is already prime; no need for a tree.
No because you have to have a prime number besides 1 like 2,5,7 because every time you use a factor tree and you put a 1 as prime you keep getting one every time.So one can not be use as a factor when doing a factor tree.
When the bottom branch consists entirely of prime numbers.
The only name is factorization.