Question

How to factorise and find 5*7*13+5 is prime or not

Answer 1

Answer:

Step-by-step explanation:

5x7x13+5

5{1x7x13+1}

5{91+1}

5{92}

Here as you can observe that your required number can have factors 5, 92, 1.... But a prime number is the number which has only two factors.

Therefore your required number is not a prime number and it is a composite number.

Thank you.