Problem 2337. Sum of big primes without primes

Created by Jean-Marie Sainthillier

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Inspired by Project Euler n°10 (I am quite obviously a fan).
With problem n°250 by Doug, you can find some global methods to compute the sum of all the primes below the input n.
For example, the sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.
But how to proceed (in time) with big number and WITHOUT the primes function ?
HINTS: sum(primes(n)) is possible here but why miss the wonderfull Sieve of Eratosthenes ?
http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes

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Last Solution submitted on May 02, 2025

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Rafael S.T. Vieira on 8 Aug 2020

Be careful, I've implemented the sieve, but not all versions of it are sufficiently fast to handle the biggest numbers in the test suite.

Yunpeng Teng on 7 Dec 2020

While evaluating the solution, the server encountered an error caused by long running MATLAB code. Edit the code if needed and then submit.

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Problem 2337. Sum of big primes without primes

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Problem 2337. Sum of big primes without primes

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Last 200 Solutions

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