Question

Is 7power5×3 square×5+3 is a composite number ? Justify your answer

Answer 1

Answer:

Yes

Step-by-step explanation:

7^5 × 3^2 × 5 + 3

= 3 ( 7^5 × 3 × 5 + 1)

since this is a product of prime numbers....it's a composite number

note : if the number (7^5 × 3 × 5 + 1) is prime our assumption is obviously right. even it's not prime, it can be surely expressed as a product of prime by factorisation