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Jan 24th, 2019
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  1. #include <stdio.h>
  2. #include <math.h>
  3. #include <omp.h>
  4. #define MAXX 2059000
  5.  
  6. int main() {
  7.  
  8. int primes[MAXX];
  9. primes[0] = 3;
  10. int entry=1;
  11.  
  12. for (int test=5; test < MAXX; test+=2){
  13.  
  14. int flag=1; //assumed prime
  15.  
  16. for (int div=0; primes[div] < sqrt(test); div++){
  17.  
  18. if(test % primes[div] ==0){
  19.  
  20. flag = 0;
  21. break;
  22. }
  23. }
  24. if (flag==1){
  25.  
  26. primes[entry]=test;
  27. entry++;
  28. printf("%d n", test);
  29. }
  30. }
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