3/31/2024 0 Comments Download list of prime numbersNow, using the Sieve of Eratosthenes method, what happens when you consider 1 to be a prime number? This algorthim is referred to as the "Sieve of Eratosthenes." 4 was already eliminated as a multiple of 2, so now you can examine the number 5 and so on.īy proceeding in this manner, the table containing the numbers from 1 to 100 will gradually be pared down and enable you to easily spot the prime numbers. Similarly, 3 is a prime number, so you can remove any numbers divisible by 3 as well. As you might suspect, the remaining numbers have a chance at being prime numbers. To explain this, we shall refer to the following two cases:įor example, let's place all of the numbers from 1, 2, 3, 4 to 100 in a table and search for all of the prime numbers.įirst, you know that 2 is a prime number, so you can easily eliminate other numbers divisible by 2, such as 4, 6, 8, 10, etc. If 1 is the only prime number, that makes it difficult to mathematically think about other numbers, so as a rule, 1 is not considered to be a prime number. However, if 1 is a prime number, then that means 2,357 and all of the other prime numbers listed on this site no longer can be considered prime numbers. So, does that make 1 a prime number? 1 can be divided by 1, and it can be "divided by itself," so it is tempting to consider it a prime number. The definition of a prime number is a number that can be "divided by 1" and can be "divided by itself."
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