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Q: How can you write 21 as a product of its prime factors?

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It is simply: 3 times 7 = 21

21 as a product of its prime factors is 1 X 3 X 7.

It is: 3*7 = 21

21 = 3 x 7

3 x 7 = 21

It is 3 time 7 = 21

21

As a product of its prime factors: 3*3*7*7 = 441 Its square root is 21 or as 3*7 as the product of its prime factors

It is when the prime factors of whole number are multiplied together that they equal that number. For example the prime factors of 21 are 3 and 7 so 3*7 = 21

The prime factors of 21 are 3,7.

The prime factors of 21 are 3 x 7.

1, 3, 7, 21 3 and 7 are prime.

The factors of 21 are: 1 3 7 21 The prime factors are: 3 and 7

The factors are 1, 3, 7 and 21. 3 and 7 are prime.

factors of 21: 3, 7 prime factors of 21: 3, 7

18 has prime factors 3 & 2 whereas 21 has prime factors 3 & 7.

The factors of 15 are: 1, 3, 5, and 15.The prime factors of 15 are: 3 and 5.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.

The factors are: 1, 3, 7, 21 The prime factors are: 3, 7

17 is a prime number. It is only evenly divisible by itself and one.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.

The factors of 18 are: 1, 2, 3, 6, 9, and 18.The prime factors of 18 are: 2 and 3.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.

The prime factors of 21 are 3 and 7.

21 has two prime factors.

21 = 3x7, and so is not prime, as it can be expressed as the product of multiple prime numbers

The factors of 294 are 1, 2, 3, 6, 7, 7, 14, 21, 42, 49, 98, 147, and 294. The prime factors of 294 are 2 x 3 x 7 x 7. 294 as a product of it's prime factors is 126

The prime factors of 21 are 3 x 7, so the prime factors of 21 squared are 32 x 72. The factors of 21 squared are 1, 3, 7, 9, 21, 49, 63, 147, and 441.