I find it hilarious that the computer which made this discovery actually kept it a secret for four whole months.

Source: https://www.newscientist.com/article/2073909-prime-number-with-22-million-digits-is-the-biggest-ever-found/

From that article: “[Curtis] Cooper’s computer actually found the prime on 17 September 2015, but a bug meant the software failed to send an email alert reporting the discovery, meaning it went unnoticed until some routine maintenance a few months later.”