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How do you determine when a three digit number is prime number? - Answers

To determine if any number is prime, one method is to check if it can be divided by any of the prime numbers less than its square root. The square root of 100 is 10 and the square root of 1000 is approximately 31.6, so any 3 digit number (100 to 999) needs to be tested for divisibility only with the prime numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31. Another test is that any number ending in 0, 2, 4, 5, 6, 7, or 8 cannot be prime.



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How do you determine when a three digit number is prime number? - Answers

https://math.answers.com/math-and-arithmetic/How_do_you_determine_when_a_three_digit_number_is_prime_number

To determine if any number is prime, one method is to check if it can be divided by any of the prime numbers less than its square root. The square root of 100 is 10 and the square root of 1000 is approximately 31.6, so any 3 digit number (100 to 999) needs to be tested for divisibility only with the prime numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31. Another test is that any number ending in 0, 2, 4, 5, 6, 7, or 8 cannot be prime.



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https://math.answers.com/math-and-arithmetic/How_do_you_determine_when_a_three_digit_number_is_prime_number

How do you determine when a three digit number is prime number? - Answers

To determine if any number is prime, one method is to check if it can be divided by any of the prime numbers less than its square root. The square root of 100 is 10 and the square root of 1000 is approximately 31.6, so any 3 digit number (100 to 999) needs to be tested for divisibility only with the prime numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31. Another test is that any number ending in 0, 2, 4, 5, 6, 7, or 8 cannot be prime.

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      To determine if any number is prime, one method is to check if it can be divided by any of the prime numbers less than its square root. The square root of 100 is 10 and the square root of 1000 is approximately 31.6, so any 3 digit number (100 to 999) needs to be tested for divisibility only with the prime numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31. Another test is that any number ending in 0, 2, 4, 5, 6, 7, or 8 cannot be prime.

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