hcf(87, 102) = 3.
factorization method:
87 = 3 x 29
102 = 2 x 3 x 17
hcf = 3
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Same as the greatest common factor of 87 and 15 (15 is the remainder of the division of 102 by 87).
Three is the greatest common factor of 33 and 87.
GCF(58, 29, 87) = 29.
To find the greatest common factor, or GCF, you must first identify the factors for each number.For 348, its factors are 1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 174 and 348.For 1024, its factors are 1, 2, 4, 8, 16, 64, 128, 256, 512, and 1024.4 is the highest (or greatest) factor they have in common, so the GCF for 348 and 1024 is 4.
87 is greater than 61.
87 = 3*29