Question

find that 19 is a prime or composite number by full method of continuous division​

Answer 1

Answer:

Yes, 19 is a prime number. The number 19 is divisible only by 1 and the number itself. For a number to be classified as a prime number, it should have exactly two factors. Since 19 has exactly two factors, i.e. 1 and 19, it is a prime number.

I: First we divide the number by the smallest prime number which divides the number exactly.

II: We divide the quotient again by the smallest or the next smallest prime number if it is not exactly divisible by the smallest prime number. ...

III: We multiply all the prime factors.