What is it called when people, e.g. computer programmers, pronounce, say, 65,536 as 'sixty-five, five, thirty-six' i.e. omitting 'thousands' etc?

I heard on ELU that computer programmers often pronounce long numbers like that. What is that method of saying the numbers called? How common is it? What is the point of it? What are the pros and cons of it?

65,536 was pronounced 'sixty-five, five, thirty-six'.

Source: "In computing contexts, we frequently read out large numbers with the "units" omitted. For example, 65,536 is read as "sixty-five, five, thirty-six", which is an abbreviation of "sixty-five thousand" five hundred thirty-six". – Canadian Yankee Apr 1 at 18:19"

Here's corroboration: "I find it really hard to imagine anyone saying "two-five-six-K" to me in speech, and if anyone did, I'm sure I would give them a mildly alarmed look. "Two-fifty-six-K" is very different, because that's a common alternative to "two hundred and fifty-six" (and I should have noted that in my first comment!) – Yee-Lum Dec 14 '15 at 17:22"

• I think you are missing the zeros. Commented Apr 4, 2021 at 7:57
• I'm a computer programmer and I've never pronounced a long number like that. If it's meant to be a numeric value, I'd say it as three hundred and twenty four billion, twenty two million, five thousand, seven hundred and seventy seven. If it was something like an id number, I'd say three two four oh two two oh oh five seven seven seven. Pronounced as you've written it would be missing important information contained in the zeros. Commented Apr 4, 2021 at 7:57
• You "heard on ELU"? Where? Commented Apr 4, 2021 at 8:31
• Thanks for the reference. The answer there, chunking, appears to answer this question. Could you add to your question to explain why that isn't the answer? (I believe you are wrong with your chunking in the question title, by the way: zeros are absolutely crucial, in the same way as in phone numbers.) Commented Apr 5, 2021 at 6:52
• @HotLicks Except that it's 64 K. Commented May 30, 2021 at 18:09