There are 6 prime numbers there whose squares are less than 250.
The numbers are 2, 3, 5, 7, 11, and 13.
What is a prime number?
A prime number is a whole number greater than 1 whose only factors are 1 and itself. A factor is a whole number that can be divided evenly into another number. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. Numbers that have more than two factors are called composite numbers.
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