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class NumberFormatter {
    constructor() {

    }

    toDec(numstr) {
        return parseInt(numstr, 10).toString(10);
    }

    toHex(numstr) {

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const bitstringToBigInt = bstr => {
  let counter = 0n;
  let byteindex = 0n;
  
  for (let i = bstr.length - 1; i >= 0; i--) {
    if (bstr[i] === '1') {
      counter += 2n**byteindex;
    }

    byteindex++;

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<?php

class T5KParser {
    private $primelistURL = 'https://t5k.org/primes/lists/all.txt';
    private $primelistRaw;

    public $primes = [];
    public $proofcodes = [];

    public function parse() {

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Running PRP tests

Let's say you want to find all PRPs with the form k^n+n for k = 6 and n < 10000

1. Download PFGW

https://sourceforge.net/projects/openpfgw/

2. Generate a sieve file

Go to https://pinetools.com/generate-list-numbers

In our example, you would fill in the following:

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using Primes

function appendLeft(num, base, prims = [])
    for n in 1:(base-1)
        leftAppended = parse(BigInt, "$n$num", base = base)
        if isprime(leftAppended)
            appendLeft("$n$num", base, prims)
        else
            if ("$num" in prims) == false
                push!(prims, "$num")

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/* "<name of block>": [<start of block>, <end of block>] */
{
    "Basic Latin": [0x0000, 0x007F],
    "Latin-1 Supplement": [0x0080, 0x00FF],
    "Latin Extended-A": [0x0100, 0x017F],
    "Latin Extended-B": [0x0180, 0x024F],
    "IPA Extensions": [0x0250, 0x02AF],
    "Spacing Modifier Letters": [0x02B0, 0x02FF],
    "Combining Diacritical Marks": [0x0300, 0x036F],
    "Greek and Coptic": [0x0370, 0x03FF],

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            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

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#!/usr/bin/env python3

import binascii
import socket
import sys
from collections import OrderedDict

# See https://web.archive.org/web/20180919041301/https://routley.io/tech/2017/12/28/hand-writing-dns-messages.html
# See https://tools.ietf.org/html/rfc1035

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// Force latest tweets
let twid_cookie = document.cookie.split(/;\s?/).filter(c => /^twid=/.test(c))[0];
if (twid_cookie) {
    let twid = twid_cookie.replace('twid=u%3D', '');
    let forceRefresh = false;
    
    // Get DB
    let req = window.indexedDB.open('localforage', 2);
    
    req.onerror = ev => {