Also you can integer overflow vk ids and they still work (ex. https://vk.com/id18446744073709551617 https://vk.com/id18446744073709551617 and https://vk.com/id1

Also you can integer overflow vk ids and they still work (ex. https://vk.com/id18446744073709551617 https://vk.com/id18446744073709551617 and https://vk.com/id1 https://vk.com/id1 go to the same place)