To find the factor tree of 512, we start by dividing 512 by its smallest prime factor, which is 2. This gives us 2 * 256. We continue this process with 256, which is 2 * 128, then 2 * 64, and so on until we reach the prime factors. The factor tree for 512 would look like this: 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2.
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Each branching will have 2 to the left. So the top number will be 512, and the list of numbers on the right sides will be 256, 128, 64, 32, 16, 8, 4, and 2.
The GCF is 4.
Common factors of 512 and 648 are: 1, 2, 4, and 8.
83 is prime. No tree.
The least common factor of any set of integers is 1.
61 is already prime. It doesn't need a tree.