17.3 MILLION MD5 hashes (unsalted, not that it matters), of which over 16 million have already been cracked.
EDIT: The developer who apparently implemented the password hashing replied to me on Twitter: https://twitter.com/russss/status/210783976879693824
Check out the twerps at @CrackMeIfYouCan.
This means next leak will be one million CRC32 password hashes?
Or maybe LM hashes. Or crypt on old /etc/password files