MathDB

1

Part of 1983 Canada National Olympiad

Problems(1)

Diophantine Equation with Factorials

Source: Canadian Mathematical Olympiad - 1983 - Problem 1.

6/26/2011
Find all positive integers ww, xx, yy and zz which satisfy w!=x!+y!+z!w! = x! + y! + z!.
factorialnumber theory unsolvednumber theory