const primorial=2*3*5*7*11*13*17*19*23;
var largest=0;
// var gblist=[];
// var tblist=[];
// var sblist=[];
var sblistlength=0;
function hcfnaive(a,b){
    if(b==0){
      return a;
    } else {
      return hcfnaive(b,a%b);
    }
    return hcfnaive(b,a%b);
}

for(i=0; i<primorial; i++){
  var k=0
  while(hcfnaive(i+k,primorial)!=1 || hcfnaive(i-k,primorial)!=1){
    k=k+1
    // if(k==165) sblist.push(i);
    if(k==165) sblistlength = sblistlength+1;
  }
  // gblist.push(k);

  if(k>largest) largest=k;
}

// for(t=0; t<primorial/2; t++){
//   tblist.push(gblist[t]+gblist[t+primorial/2]);
// }
console.log(sblist);
// console.log("length: " + sblist.length);
console.log("length: " + sblistlength);
console.log("largest: " + largest);
console.log("primorial: " + primorial);