Skip to content

Comment on Hashrocket execs (not Obie) charged in $425 million mail fraud caseparent

Comments

Not really related to the story, but can someone explain to me why Americans put '$425MM', where does the second M come from? Here in the UK we'd just put '£425m'? Just curious because I saw DHH use MM too.

In a lot of banking and finance, they use "M" to abbreviate thousands and "MM" to abbreviate millions. It's based on the roman numeral "M", so "MM" is meant to represent "a thousand thousands". Of course if you know anything about Roman numerals, "MM" is in fact = 2,000.

I believe the appropriate abbreviation is "$425M", not "$425m". The AP Stylebook avoids the issue altogether and dictates that million, billion, etc. should all be spelled out and in all lowercase.

AboutSource Built by g1lg1l

Hackerly is an independent reader for Hacker News, built on the public HN API. Not affiliated with Y Combinator.