It's no harder than converting a binary number to decimal. But I doubt they store the 190 raw bits. Instead, the token is probably generated by appending 32 ch

It's no harder than converting a binary number to decimal. But I doubt they store the 190 raw bits. Instead, the token is probably generated by appending 32 characters, each sampled randomly from the 62-character alphabet. The result has 190.53 bits of entropy.