An algebraically soluble equation of odd prime degree which is irreducible in the natural field possesses either
Kronecker's Polynomial Theorem
See also
Abel's Irreducibility Theorem, Abel's Lemma, Schönemann's TheoremExplore with Wolfram|Alpha
References
Dörrie, H. 100 Great Problems of Elementary Mathematics: Their History and Solutions. New York: Dover p. 127, 1965.Referenced on Wolfram|Alpha
Kronecker's Polynomial TheoremCite this as:
Weisstein, Eric W. "Kronecker's Polynomial Theorem." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/KroneckersPolynomialTheorem.html