6903

Number
$6903$ (six thousand, nine hundred and three) is:


 * $3^2 \times 13 \times 59$


 * The $59$th hexagonal number after $1$, $6$, $15$, $28$, $45$, $66$, $91$, $\ldots$, $5565$, $5778$, $5995$, $6216$, $6441$, $6670$:
 * $6903 = \ds \sum_{k \mathop = 1}^{59} \paren {4 k - 3} = 59 \paren {2 \times 59 - 1}$


 * The $117$th triangular number after $1$, $3$, $6$, $10$, $15$, $\ldots$, $5995$, $6105$, $6216$, $6328$, $6441$, $6555$, $6670$, $6786$:
 * $6903 = \ds \sum_{k \mathop = 1}^{117} k = \dfrac {117 \times \paren {117 + 1} } 2$