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  1. #include<stdio.h>
  2. #include<math.h>
  3. int main(void){
  4.  
  5. int x,i;
  6. // x:dividend  i:divisor
  7.  
  8. for (x=2;x<=1000000;x++){
  9.  for(i=2;i<=sqrt(x)&&x%i!=0;i++)
  10.      ;
  11. }
  12.  
  13. return 0;
  14. }
Success #stdin #stdout 1.51s 1784KB
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https://ideone.com/r5isOd
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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