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Q: Is the number 231 a prime number?

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231 is prime.

They are: 3*7*11 = 231

prime factorization of 231

231 = 3 x 7 x 11

No! It is divisible by 21 and 11 (21x11=231)

13 is the greatest prime that needs to be checked to determine if 231 is a prime.

The prime factors of 231 are: 3, 7, 11

It is: 3711 = 231

The 8 factors of 231 are 1, 3, 7, 11, 21, 33, 77, and 231. The prime factorization of 231 is 231 = 3 * 7 * 11. The prime factors of 231 are 3, 7 and 11.

A fundamental theorem in mathematics is that of unique factorisation. Any number can have only one prime factorisation. 231 = 3*7*11

It is a prime number

To determine factors of a number it is necessary to divide the number by prime numbers of increasing value. If there is no remainder then the prime number is a factor. The square root of 231 is approximately 15 so it is necessary to divide by all the prime numbers up to 13 (15 is not a prime number). 231 ÷ 2 leaves a remainder of 1 231 ÷ 3 divides exactly 77 times (which is 7 x 11 - both are prime numbers) 231 ÷ 5 leaves a remainder of 1 231 ÷ 7 divides exactly 33 times (which is 3 x 11 - both are prime numbers) 231 ÷ 11 divides exactly 21 times (which is 3 x 7 - both are prime numbers) 231 ÷ 13 leaves a remainder of 10 If we multiply together the three numbers that are shown to be factors 3 x 7 x 11 = 231 this confirms that there are no other factors of 231 except 1 and 231 itself. This last condition is true for every positive integer. 231 is divisible by 1, 3, 7, 11 and 231

231 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 have a different name.

231 = 3*7*11

231 is a composite number. This is because composite numbers are any number that has more than two factors(one and itself). Therefore, since 3, 7, and 11 to name a few are factors of 231 that makes it a composite number.

3 x 7 x 11 is a prime factorization of 2313 x 7 x 11 = 231

A prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors; in other words, it has at least one factor besides 1 and itself. 231 has factors other than 1 and itself, so it is not a prime number. For example, it is divisible by 3. (You can check this by adding the digits of the number: 2 + 3 + 1 = 6. If the sum of the digits is divisible by 3, the number is also divisible by 3.) Therefore, 231 is a composite number.

The prime factorization of 231 = 3 x 7 x 11

I guess the only prime numbers that equal 231 are two and 229.

231 has exactly three prime factors. They are 3, 7, and 11.

No, they are not relatively prime.

No, they are not relatively prime.

They are: 2+229 = 231

3*7*11 = 231

It is: 3*7*11 = 231

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