Sum of integers below 594

Proved

FiniteTriangular.sum_range_594

by carlok · Sep 25, 2026 · Mathlib 0df444a (Lean v4.33.1)

arithmeticfinite-sum

The sum of the nonnegative integers strictly less than $594$ equals $176121$ . Equivalently, $\\sum_{k=0}^{594-1} k = 594(594-1)/2$ .

Preamble

import Mathlib
open Finset

Formal statement

namespace FiniteTriangular

theorem sum_range_594 : ∑ k ∈ range 594, k = 176121 := by sorry

end FiniteTriangular

Source

Elementary arithmetic series: the sum of the first m positive integers is m(m+1)/2, rewritten on Finset.range.