# Is 37 composite or prime?

Prime

Aside from memorizing this, we can calculate the fact that it is prime.

For a number to be composite, it must be the product of two numbers (other than itself and one). Let's do some multiplication!

And here we can stop. As the left number continues to increase further (11, 13, 17, etc), the right number will already have been found to not be divisible into 37. And so 37 is prime.

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The number 37 is prime.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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