Number Theory T...

The number which have more than two factors is called _____. 

If i = $$\sqrt {-1}, then  1 + i^2 + i^3 -i^6 + i^8 $$ is equal to -

($$i^{10}+1) (i^9 + 1)(i^8 +1).......(i+1)$$  equal to 

Twin primes consist of 

The two consecutive prime numbers with difference 2 are called

Identify the prime number among the following options.

Which of the following is/are not twin prime(s)?

Sum of first three prime numbers which end at 3 is: 

Which of the following is the factor of all prime numbers?

The product of $$2 \times 7 \times 3 \times 5$$ is a .........