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-84 is a composite number because it has factors other than 1 and itself. It is not a Prime number.

The 24 factors of -84 are ±1, ±2, ±3, ±4, ±6, ±7, ±12, ±14, ±21, ±28, ±42, and ±84.

The factor pairs of 84 are -1 x 84, -2 x 42, -3 x 28, -4 x 21, -6 x 14, -7 x 12, 1 x -84, 2 x -42, 3 x -28, 4 x -21, 6 x -14, and 7 x -12. The prime factors of 84 are -1, 2, 2, 3, and 7. The prime factorization of 84 is -1 x 2 x 2 x 3 x 7 or, in index form (in other words, using exponents), -1 x 22 x 3 x 7. NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.

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15y ago

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