a^2-3a-19 not divisible by 289
Source: (Indian) RMO 2009 Problem 2
November 29, 2009
modular arithmeticnumber theory unsolvednumber theory
Problem Statement
Show that there is no integer such that a^2 \minus{} 3a \minus{} 19 is divisible by .
Source: (Indian) RMO 2009 Problem 2