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21 is a composite number; it has factors other than 1 and itself. It is not a Prime number.
The 4 factors of 21 are 1, 3, 7, and 21.
The factor pairs of 21 are 1 x 21 and 3 x 7.
The proper factors of 21 are 1, 3, and 7 or,
if the definition you are using excludes 1, the are 3 and 7.
The prime factors of 21 are 3 and 7.
The 2 distinct prime factors (listing each prime factor only once) are 3 and 7.
The prime factorization of 21 is 3 x 7.
NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.
What else can I help you with?
Prime factors of 21?
The prime factors of 21 are 3,7.
What is 21 as a product of its prime factors?
21 as a product of its prime factors is 1 X 3 X 7.
What are the factors and prime factors of 9 and 21?
1,3,9 1,3,7,21 3 and 7 are prime.
Prime factorization of 18 and 21?
The factors of 18 are: 1 2 3 6 9 18 The prime factors are: 2 x 3 x 3 and The factors of 21 are: 1 3 7 21 The prime factors are: 3 x 7
What is the prime factor of 21?
The prime factors of 21 are 3 and 7.
What are the prime factors and prime factors of 21?
1, 3, 7, 21 3 and 7 are prime.
What are the factors and prime factors of 21 in exponet form?
The factors of 21 are: 1 3 7 21 The prime factors are: 3 and 7
What are prime numbers of 21?
factors of 21: 3, 7 prime factors of 21: 3, 7
What is the factors and prime factors of 21?
The factors are 1, 3, 7 and 21. 3 and 7 are prime.
What are the prime factors for 18 and 21?
18 has prime factors 3 & 2 whereas 21 has prime factors 3 & 7.
Prime factors of 21?
The prime factors of 21 are 3,7.
How can you write 21 as a product of its prime factors?
As a product of its prime factors: 3*7 = 21
What are the factors and prime factors of 18 and 21?
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.
What are the prime of factors of 21?
prime factor = prime number which can be divided into the given number with no remainder The prime factors of 21 are 3 and 7.
What are the factors and prime factors of 21 squared?
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.
What are the factors and prime factors of 15 and 21?
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.
How many prime numbers are there in 21?
21 has two prime factors.
