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21 isn't prime. The prime factorization of 42 is 2 x 3 x 7.

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12y ago

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No because its prime factorization is: 2*3*7 = 42

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9y ago
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No because as a product of its prime factors: 2*3*7 = 42

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Wiki User

10y ago
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21 isn't prime,

2 x 3 x 7 = 42

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Wiki User

10y ago
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Q: Is 21x 2 the only prime factorization of 42?
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