isabelle/valid/mathd_numbertheory_543.thy (10 lines of code) (raw):
(*
Authors: Wenda Li
*)
theory mathd_numbertheory_543
imports Complex_Main "HOL-Computational_Algebra.Computational_Algebra"
begin
theorem mathd_numbertheory_543 :
"(\<Sum> k \<in> ({n::nat. n dvd (30^4)}). 1) - 2 = (123::nat)"
sorry
end