743 (number)
743 is the natural number following 742 and preceding 744. It is a prime number.
743 is the 132nd prime number and a Sophie Germain prime, because 2 × 743 + 1 = 1487 is also prime.
743 is an emirp, because 347 is prime.
There are exactly 743 independent sets in a four-dimensional hypercube graph, and exactly 743 connected cubic graphs with 16 vertices and girth four.