Question

is 673 a prime number? PROVE IT

Answer 1

hye

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what is a prime number?

 it is a number which has only 2 factors 

[1 and number itself]

=>proof 1 : common factors method:-

=> 673 = 1,673

we see that the number cant be divided by any other number except 1 and 673 .

∴ 673 is a prime number

proof 2: prime factoriztion method

=>      673 Ι 673
            1    Ι_1_____

∴673 is  a prime number 

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hope it helps u..............