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May 26th, 2018
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  1. <?php
  2.  
  3. $sum = 2;
  4.  
  5. for ($i = 3; $i < 10000; $i+=2) {
  6. $flag = TRUE;
  7.  
  8. for ($j = 2; $j <= sqrt($i); $j++) {
  9. if ($i % $j == 0) {
  10. $flag = FALSE;
  11. break;
  12. }
  13. }
  14.  
  15. if ($flag) {
  16. $sum += $i;
  17. echo $i . "\n";
  18. }
  19. }
  20.  
  21. echo $sum . "\n";
  22.  
  23. ?>
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