Find the minimum prime number which divides `9^1+81^2+243^3+2187^4`

Find the smallest prime number dividing the sum 3^11+5^13

Find the number which when divided by 9 gives 4.

Find the number which when divided by 9 gives 4.

In each of the following questions, find out the wrong number in the series. 3, 9, 27, 81, 243, 730

Find the missing numbers. 3, 9, 27, 81, ...

If a ,b ,c are non-zero real numbers, then find the minimum value of the expression (((a^4+ 3a^2+1)(b^4+5b^2+1)(c^4+7c^2+1))/(a^2b^2c^2)) which is not divisible by prime number.

If a ,b ,c are non-zero real numbers, then find the minimum value of the expression (((a^4+ 3a^2+1)(b^4+5b^2+1)(c^4+7c^2+1))/(a^2b^2c^2)) which is not divisible by prime number.

The geometric mean of the numbers 3, 9, 27, 81, 243 is :