249999

249,999 is a natural number that follows 249,998 and precedes 250,000. It is odd and composite. Its prime factorization is 3 × 167 × 499, making it the product of three primes. Equivalently, 249,999 = 3 × 83,333 and 83,333 = 167 × 499.

Since 250,000 = 2^4 × 5^6, 249,999 is one less than a highly composite round number; it is also equal to 250,000 − 1.

Numerical representations: in binary it is 111101000010001111 (18 bits), and in hexadecimal it is 0x3D08F.

In modular arithmetic terms, 249,999 ≡ −1 mod 250,000 and is divisible by 3, 167, and 499.

Context: as the near-quarter-million mark, 249,999 is sometimes cited in problems involving near-boundaries or tests of divisibility. Its factorization into three primes makes it of interest mainly as a straightforward composite example in elementary factorization discussions.