A factor tree of 75,000 is
75,000
75 x 1000
(3 x 25) x (10 x 100)
(3 x (5x5)) x ((2x5) x (10x10))
(3 x (5x5)) x ((2x5) x ((2x5)x(2x5)))
So, the prime factorization is 2 x 2 x 2 x 3 x 5 x 5 x 5 x 5 x 5 = 23 x 3 x 55
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1997 is already prime; no tree.
350=2x5x5x7
194 2 x 97 Since both 2 and 97 are prime numbers, the prime factorization tree is complete.
When the bottom branch consists entirely of prime numbers.
a factor tree