Problem 2337. Sum of big primes without primes
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 ?
Solution Stats
Problem Comments
-
2 Comments
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.
Solution Comments
Show commentsProblem Recent Solvers129
Suggested Problems
-
Sort a list of complex numbers based on far they are from the origin.
5603 Solvers
-
Are all the three given point in the same line?
413 Solvers
-
Create logical matrix with a specific row and column sums
300 Solvers
-
Cell Counting: How Many Draws?
1834 Solvers
-
the average value of the elements
1477 Solvers
More from this Author43
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!