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83 is a Prime number so the prime factorisation of 83 is 1*83

Therefore the only possible GCF is 1 or 83.

But, 83 > 55 so 83 cannot be a factor of 55. Consequently, the only possible common factor is 1. And since 1 is a GCF of all numbers, that is their GCF.

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11y ago
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7y ago

5 x 11 = 55

83 is already prime. No factorization.

No prime factors in common, so the GCF is 1.

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7y ago

The GCF is 1.

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