pldespaigne

import { encode } from '@ethereumjs/rlp';
import { ecrecover } from '@ethereumjs/util';
import { keccak256 } from 'ethereum-cryptography/keccak';

// tx: 0xb00b758da7b97dbeedd1ef62592b2c1427c70ca042dc51a63f3a39d8d31ebbcc
const chainId = 0x1n;
const nonce = 0x3n;
const maxPriorityFeePerGas = 0xf4240n;
const maxFeePerGas = 0x73323c225n;
const gasLimit = 0xdd9cn;

pldespaigne

function atkin(MAX) {
  const SQRT_MAX = Math.floor(Math.sqrt(MAX) + 1);
  const array = new Array(MAX).fill(false);

  for (let x = 1; x < SQRT_MAX; x++) {
    for (let y = 1; y < SQRT_MAX; y++) {
      let k = 4 * x * x + y * y;
      if ((k < MAX) && ((k % 12 === 1) || (k % 12 === 5))) {
        array[k] = !array[k];
      }

pldespaigne

// create2  playground by @pldespaigne
// based on contract written by @miguelmota & @ricmoo

pragma solidity >0.4.99 <0.6.0;

contract Factory {
  event Deployed(address addr, uint256 salt);

  function deploy(bytes memory code, uint256 salt) public returns(address) {
    address addr;