**prime**+

**prime**=

**number**, whenever each of

**prime**and

**number**– 1 is a prime number.

Determine the minimum value of x for which this is possible. What is the next smallest value of x?

(B) Keeping all the other conditions in (A) unaltered, if

**number**+ 1 is a prime number (rather than

**number**– 1), then what is the minimum value of x for which this is possible? What is the next smallest value of x?