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Since the only factors of 19 are 1 and 19, it is a prime number.
A Prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors.
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Which number is prime 9 19 21 25?
3 x 3 = 9 (Not a prime ; Composite) 1 x 19 = 19 ( Prime) 3 x 7 = 21 (Note a prime: Composite) 5 x 5 = 25 (Not a prime ; Composite).
Is 7654321 prime or composite?
7654321 is a multiple of 19.
Identify each number as a prime or composite number 13 33 45 19?
13 and 19 are prime. 33 and 45 are composite.
Is 19 composite?
no- 19 is prime which means it has no proper divisors.
Is 133 is a prime or composite?
133 is composite. Its factors are 1 7 19, and 133.
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