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To be sure, prime numbers are a number which cannot be divisible by every number except for itself and one. Take 5 for an example. There is no possible number which is divisible by itself except for itself and one. So, 5 is a Prime number.2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 are all prime numbers to 100. Let's refresh our mind. Now, 57 has factors of 1, 3, 19, and 57. Let's remove the 57 and 1. Now, 3 and 19 are all the factors of 57.

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Jayden He

Lvl 5
7mo ago
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Wiki User

6y ago

No, 57 is not a prime number. It has factors of 1, 3, 19 and 57.

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Saanvi Neema

Lvl 7
4y ago

No, 57 is not a prime number.

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Q: Is 57 a prime number
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