seq

You(*) whisper to X, "the same package [GNU coreutils] which provides seq"
You(*) whisper to X, "the command line utility"
You(*) whisper to X, "also provides factor"
You(*) whisper to X, "which outputs prime factors"
You(*) whisper to X, "makes me want to start making fucked up shell scripts"
You(*) whisper to X, "that use goedel numbering"
You(*) whisper to X, "for some purpose."
You(*) whisper to X, "i have to wonder how a commandline utility for factoring primes is 'core' in any way, though"