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:
This method helps us to find out Prime number from 1 to n.
Procedure :
Write all natural numbers from 1 to n.
1. The first Prime number is 2, leave 2 and round off all the multiples of 2. They are 4, 6,8... the next Prime number left is 3.
2. Round off all the multiple sof 3 except 3.
3. We have to continue this process up-to the highest Prime number which don't exceed √n.
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hey there : )
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In mathematics, the sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to any given limit. ... One of a number of prime number sieves, it is one of the most efficient ways to find all of the smaller primes.
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hope it helps ^_^
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