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Caribou calves weigh about 13 pounds at birth.
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Is this number 13 a prime or composite number?
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Let’s define prime and composite numbers.
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A prime number is a number that is only divisible by itself and one.
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A composite number is a whole number that is made by multiplying other whole numbers together.
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It’s common to memorize the list of the first few prime numbers: two, three, five, seven, 11, 13, 17, 19, 23, and 29.
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13 is on the list.
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It’s a prime number because it’s only divisible by one and itself.
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13 is a prime number.