Abstract
It is a well known fact that, if p is an odd prime, then the pth-elementary cyclotomic polynomial Φ2sp(x) has an associated p-Eisenstein polynomial . We extend this construction and show that, every order one elementary cyclotomic polynomial Φ2s pt (x) has an associated p-Eisenstein polynomial
. In addition, for each Φ2s pt (x), we investigate the divisibility (with respect to the prime p) of the coefficients of
. We also establish analogous results for order one Carlitz cyclotomic polynomials over
q [T ].