jQuery - end setinterval after X rund

I have a little slider im working on which is almost there im jsut having some trouble with me jQuery.

---

So first off: I want my slider to reset after the interval has run x amount of times. It was my understanding that the following would work but it doesn't seem to take. 6000, slides, function() { homesliderend();

so lets say slides = 2 set interval should call homesliderend(); but it doesn't the interval just keeps running.

---

Second Issue: I'm also trying to get it to add 100% to lengther every 6 seconds. But instead of adding 100 each time its just setting it to 100 its not multiplying.

jQuery(document).ready(function($) {
  "use strict";

  function homesliderend() {
    $(".lengther").animate({
      left: "0%"
    }, 500);
  }

  function homeslider() {
    var slides = $(".slide.t-align").length,
      lwidth = slides * 100,
      n = 0;

    $(".lengther").css("width", lwidth + "%");

    setInterval(function() {
      var tn = n + 100;
      $(".lengther").animate({
        left: "-" + tn + "%"
      }, 500);
    }, 6000, slides, function() {
      homesliderend();
    });


  }
  homeslider();
});