Is 1198 a Prime Number?
2026-02-28 12:44 Diff

The prime number chart is a tool created using a method called “The Sieve of Eratosthenes.” In this method, we follow these steps.

Step 1: Write numbers from 1 to 100 in 10 rows and 10 columns.

Step 2: Leave 1 without coloring or crossing, as it is neither prime nor composite.

Step 3: Mark 2 as a prime number and cross out all the multiples of 2.

Step 4: Mark 3 as a prime number and cross out all the multiples of 3.

Step 5: Repeat this process until you reach the table consisting of marked and crossed boxes, except 1. Through this process, we will have a list of prime numbers from 1 to 100.

The list includes 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97. 1198 is not present in the list of prime numbers up to 100, so it is a composite number.