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What one is a prime number 21 23 25?
23 is a prime number.
Is 15 17 19 21 23 25 27 29 and 31 prime or composite?
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
Is 3 13 17 21 23 25 a prime number?
3, 13, 17, 23 are prime numbers. The others are not.
Is 23 a twin prime?
A twin prime is a prime number that differs from another prime number by two.ex. (5, 7)The numbers two away from 23 are 21 and 25 which are both composite numbers.So in short, no 23 is not a twin prime.
What are the composite numbers between 20 and 25?
The composite numbers between 20 and 25 are 21, 22, and 24. 23 is the only prime number between 20 and 25.
What one is a prime number 21 23 25?
23 is a prime number.
Which is a prime numbers 21 23 25 or 27?
It is 23
What is the prime number of 21 22 23 24 25?
23
What is the prime number out of 21 23 and 25?
21 = 3 x 7, so it is not a prime number. 23 = 1 x 23, it does not have any other factors, so it is a prime number. 25 = 5 x 5, so it is not a prime number.
Is 15 17 19 21 23 25 27 29 and 31 prime or composite?
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
Is 3 13 17 21 23 25 a prime number?
3, 13, 17, 23 are prime numbers. The others are not.
Is 13 15 17 19 21 23 25 27 29 prime numbers?
They are all prime numbers except for 15 21 25 and 27 which are composite numbers
Which the the numbers 19 21 23 and 25 has the most factors?
The number 21 would be the answer. 19 and 23 only have two factors, 1 and themselves, as they are prime numbers. 25 only has 1, 25 and 5. 21 has 1, 21, 3 and 7 for 4 possible factors.
What is 18 19 20 21 22 23 24 25 are they composite or prime?
All the numbers are composite except the ones in bold: 18 19 20 21 22 23 24 25.
Is 23 a twin prime?
A twin prime is a prime number that differs from another prime number by two.ex. (5, 7)The numbers two away from 23 are 21 and 25 which are both composite numbers.So in short, no 23 is not a twin prime.
What are the composite numbers between 20 and 25?
The composite numbers between 20 and 25 are 21, 22, and 24. 23 is the only prime number between 20 and 25.
What are the factors and prime factors for 25 and 21?
1, 3, 7 and 21; 3 and 7 are prime. 1, 5 and 25; 5 is prime.
