This calculator determines the nth triangular number. Generates composite numbers.

This calculator has 1 input.

This calculator has 1 input.

- formula
- a fact or a rule written with mathematical symbols. A concise way of expressing information symbolically.
- number
- an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
- triangle
- a flat geometric figure that has three sides and three angles
- triangular number