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Prime numbers
What is a prime number?
A prime number is a number that only has one factor pair.
For example
As an example 11 is a prime number because it only has one factor pair.
What is a factor pair?
A factor pair is two numbers that you multiply together to get another number.
Are any of these numbers prime?
22
NOPE
22 is not a prime number because the factors are1,2,11,22.
49
NOPE
49 is not a prime number because the factors are 1,7, and 49.
137
YEA
137 is a prime number because the only factors are 1 and 137.
175
NOPE
175 is not a prime number because it ends in a five and if it ends in a 0 or 5 then we know that it is a multiple of five.
THE END !
What makes a prime number a prime number is it only has one factor pair.
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