THE NUMBERS THAT CAN BE REPRESENTED
BY A SPECIAL CUBIC POLYNOMIAL
Abstract. We will show that if d is a cubefree integer and n is an integer,
then with some suitable conditions, there are no primes p and a positive
integer m such that
d is a cubic residue (mod p), 3 - m, p k n
if and only if there are integers x, y, z such that
x3 + dy3 + d2z3 − 3dxyz = n.