Show through factorising that 899 is not a prime number.

To show that 899 is not a prime number, we can factor it. First, we can divide 899 by 29, which is a known prime number. When we perform the division, we find that 899 ÷ 29 = 31. Both 29 and 31 are prime numbers, so we can express 899 as 29 × 31. Since it has factors other than 1 and itself, this confirms that 899 is indeed not a prime number. In a real-world application, understanding whether a number is prime can be crucial in fields such as cryptography, computer science, and number theory. For instance, prime numbers are used to create secure encryption keys for online transactions, ensuring data safety. This practical aspect of primes showcases their importance beyond pure mathematics, influencing our everyday digital lives!