## What is algorithm of sieve of Eratosthenes?

The sieve of Eratosthenes algorithm is an ancient algorithm that is used to find all the prime numbers less than given number T. It can be done using O(n*log(log(n))) operations. Using this algorithm we can eliminate all the numbers which are not prime and those that are less than given T.

## What is sieve technique algorithm?

In mathematics, the sieve of Eratosthenes is an ancient algorithm for finding all prime numbers up to any given limit.

**What is sieve in coding?**

This Sieve method is one of the most important methods in number theory which is widely used in Competitive Programming with which you can find a prime number, divisors of a number with an optimized solution.

**How is the time complexity of Sieve of Eratosthenes is n * log log n ))?**

The classical Sieve of Eratosthenes algorithm takes O(N log (log N)) time to find all prime numbers less than N. In this article, a modified Sieve is discussed that works in O(N) time.

### How is the time complexity of sieve of Eratosthenes is n * log log n ))?

### What is Sieve of Eratosthenes in Python?

Sieve of Eratosthenes is a method for finding all primes up to (and possibly including) a given natural. This method works well when is relatively small, allowing us to determine whether any natural number less than or equal to is prime or composite.

**Why is sieve of Eratosthenes faster?**

You still do one constant-time operation per a number-prime pair. In fact, the dumb algorithm breaks off as soon as it finds a prime, but sieve of Eratosthenes marks each number several times – once for every prime it is divisable by. That’s a minimum of twice as many operations for every number except primes.

**Who developed an easy method to find out all the prime numbers?**

polymath Eratosthenes

In addition to calculating the earth’s circumference and the distances from the earth to the moon and sun, the Greek polymath Eratosthenes (c. 276-c. 194 BCE) devised a method for finding prime numbers. Such numbers, divisible only by 1 and themselves, had intrigued mathematicians for centuries.

## How many of the numbers among 87 97 107 117 127 are prime numbers?

Answer. 17 , 97 are the prime numbers.

## Is it 101 or 101?

101 (one hundred [and] one) is the natural number following 100 and preceding 102. It is variously pronounced “one hundred and one” / “a hundred and one”, “one hundred one” / “a hundred one”, and “one oh one”. As an ordinal number, 101st (one hundred [and] first), rather than 101th, is the correct form.