Last updated on May 26th, 2025
Do you get confused while checking if a number is prime? Determining a prime number is easy. They are used in encryptions. Here, this article checks if 289 is a prime.
Since 289 has four factors, it is not a prime number. The basic methods used to check if a number is prime are the counting divisors method, divisibility method, prime number chart, and prime factorization.
This method will tell the total number of divisors a number has.
The divisors of 289 = 1, 17, 289
Therefore, 289 is not a prime number.
If a number has more than two factors, it is composite. Here, the factors of 289 are 1, 7, 23, and 289.
This method will check if a number is prime or not with the help of a prime number chart. Only if the number is seen in the chart, then it's a prime.
This method expresses the product of prime factors in its exponential form.
The prime factorization of 289 is → 1 × 172
Hence, the prime factor of 289 is 17
While determining whether a number is prime or not, you can get confused. Here, we will discuss the mistakes that can happen and the solutions to tackle them
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.