hey guyz..will u please help me on getting the required of this problem and the solution..i tried but i think i really need your help..

"Are the integers n and x (with n>7) such that n!=x^2-1?

By n! we mean that product of the integers from 1 to n. It is known that 4!+1=25=5^2, 5!+1=121=11^2, and 7!+1=5041=71^2 .