13603

13603 is a natural number that falls between 13602 and 13604. It is of interest in basic number theory due to its factorization and divisors.

The prime factorization of 13603 is 61 multiplied by 223, both of which are prime. As a result, its positive divisors are 1, 61, 223, and 13603. This makes 13603 a semiprime, a product of exactly two primes, which is a common object of study in introductory discussions of factorization and arithmetic structure.

In decimal form, the digits of 13603 are 1, 3, 6, 0, and 3, with a digit sum of 13. In binary, 13603 is represented as 11010100100011₂, reflecting its decomposition into powers of two: 2^13, 2^12, 2^10, 2^8, 2^5, 2^1, and 2^0.

As a semiprime, 13603 serves as an example in topics related to factorization complexity and primality testing. Its property of having exactly four divisors (1, 61, 223, 13603) illustrates how the divisor count correlates with prime factorization for composites.

The number 13603 also appears as an identifying label in various catalogs and datasets, where numerical identifiers are used to index entries. In this article, the focus remains on its arithmetic characteristics and its role as a semiprime.