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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.
Are 4 and 21 relatively prime?
Yes, 4 and 21 are relatively prime. Numbers that are relatively prime only have the number 1 as a common factor. That is the case with 4 and 21.
What is the prime factorization of 15 and 21?
21=3*7 15=3*5 Not to judge, but...this shouldn't be too difficult...
What is the prime factorization of 399 using only 21?
The prime factorization of 399 is 3 x 7 x 19. 21 wouldn't be included since it isn't a prime number.
Is 21 relatively prime?
It can be. 21 is relatively prime with 32.
What is the odd number between 10 and 21 which is not prime?
15
Which number is not a prime or a composite number 21 15 8 and 1?
1 is not composite or prime.
Is number 21 prime or composite?
number 21 is prime
Which pair of number is relatively prime 10 and 21 12 and 54 15 and 27 21 and 39?
10 and 21
Is the prime number 21 is a prime number?
21 is a composite number, not a prime, having prime factors 3x7.
What odd number between 11 and 21 is the product of two prime numbers?
13 is prime so it is not the number. 15 is the product of 3 and 5, two prime numbers, so it fits the conditions. 17 is prime so it is not the number. 19 is prime so it is not the number. 15 is the only odd number between 11 and 21 that fits the conditions. However, if 21 is included in the range, it also is the product of two prime numbers: 3 x 7.
Are 21 and 11 prime numbers?
11 is a prime number but 21 is not a prime number as it is divisible by 3.
Is 21 a prime number?
A prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.No, 21 is not a prime number.21 is divisible by 1, 3, 7, & 21No. 21=3*7
Is 21 seven a prime number?
21 is the product of two prime numbers, three and seven. A prime number is defined as a number divisible only by one or itself. So ... NO ... 21 is not a prime number.
What numbers has the greatest number of prime factors 12 15 21 25?
12 (2x2x3)
Is these prime or composite or neither 15 21 31 26 61?
31 and 61 are prime, the rest composite.
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.
