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Anonymous
Factor tree of:
.........135
........../ \
........27 5
......../ \
.......9 3
....../ \
.....3 3
prime factorization for 135: 3 x 3 x 3 x 5
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Probably 5, since it is the largest prime factor.
135 = 3 * 3 * 3 * 5 or 33 * 5
135=3x3x3x5ab=(a)(b)
135 = 33 x 51
3 and 5 (3 x 3 x 3 x 5)
33 x 5 = 135
3 x 3 x 3 x 5 = 135
Since 15 is a factor of 135, it is automatically the GCF.
135: 5*9*3*3*3
3 and 5