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Q: What are the prime factors of 399?

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1, 3, 7, 19, 21, 57, 133, and 399. The prime factors of 399 are 3, 7, and 19.

399 is not a prime number because it has more than two factors which can be shown by the prime factorization of 399 i.e. P.F. of 399 = 3x7x19.

399 is not prime as it has more than two factors which are 1 and itself as it has many other combinations of numbers to resolve the question so no 399 is not prime

3 x 7 x 19 = 399

The factors of 399 are: 1, 3, 7, 19, 21, 57, 133, 399.

399 = 3 * 7 * 19

399 = 3 * 7 * 19

The positive integer factors of 798 are: 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798 The prime factors of 798 are: 2, 3, 7, 19

1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995 3, 5, 7 and 19 are prime.

1, 3, 7, 19, 21, 57, 133, 399

1, 3, 7, 19, 21, 57, 133, 399

The prime factorization of 399 is 3 x 7 x 19. 21 wouldn't be included since it isn't a prime number.

The common factors are: 1, 3

Prime factors are factors that are also prime numbers.

The factors of 9975 are: 1 3 5 7 15 19 21 25 35 57 75 95 105 133 175 285 399 475 525 665 1425 1995 3325 9975.The prime factors are: 3, 5, 7, 19

All numbers have factors. Some factors are prime numbers. These are prime factors. A factor string where all the factors are prime numbers is called a prime factorization.

1 and 19.

Prime numbers are prime factors.

There is more than one possible answer. The prime factors of 16 are 2, 2, 2, and 2. It has four prime factors, but only one distinct prime factor. The prime factors of 24 are 2, 2, 2, and 3. It has four prime factors, but only two distinct prime factors. The prime factors of 36 are 2, 2, 3, and 3. It has four prime factors, but only two distinct prime factors. The prime factors of 40 are 2, 2, 2, and 5. It has four prime factors, but only two distinct prime factors. The prime factors of 54 are 2, 3, 3, and 3. It has four prime factors, but only two distinct prime factors. The prime factors of 56 are 2, 2, 2, and 7. It has four prime factors, but only two distinct prime factors. The prime factors of 60 are 2, 2, 3, and 5. It has four prime factors, but only three distinct prime factors. The prime factors of 81 are 3, 3, 3, and 3. It has four prime factors, but only one distinct prime factor. The prime factors of 84 are 2, 2, 3, and 7. It has four prime factors, but only three distinct prime factors. The prime factors of 88 are 2, 2, 2, and 11. It has four prime factors, but only two distinct prime factors. The prime factors of 90 are 2, 3, 3, and 5. It has four prime factors, but only three distinct prime factors.

All non-zero numbers have factors. Some factors are prime numbers. Prime factors are factors that are prime numbers.

The factors of 12 are: 1,2,3,4,6. The prime factors are the prime numbers in the factors. So: 1,2,3 are the prime factors of 12.

Factors: 1,3,5,15 Prime Factors: 3,5

The factors of 1993 are: 1 1993 The prime factors are: 1993 is a prime number.

factors: 1, 1291 (prime)prime factors: 1291 (go figure!)

The factors of 401 are: 1 401 The prime factors are: 401 is a prime number.