#rpn
Live, measured metrics for the hashtag #rpn from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #rpn
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-10-16 01:40 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-10-16 01:40 UTCNo related tags with measured usage found for #rpn.
Live pulse
measured · mastodon.social (Mastodon tag timeline) · fetched 2026-10-16 01:40 UTCEverything below is measured over the latest 40 public posts (spanning ~9007 hours).
Posting hours (UTC) — busiest: 15:00
Languages: English (32) · Japanese (4) · French (1) · Swedish (1) · Russian (1)
Avg boosts / post: 1.1
Top of the latest posts
Wow, look what came my way! 🤩 A fully functional HP-25C, production date week 5 1977 (1960+17) in S(ingapore). A couple of alkalines easily replaced the built in (dead) rechargeables, which luckily hadn’t leaked. Need to find a manual for
Courtesy of Eric Rechlin of hpcalc.org, now you can watch a fat ugly guy who says "um" far too often, at HHC 2025 talking about and demonstrating the forthcoming Nonpareil II microcode-level simulation of various HP RPN calculators (current
I feel bad for Jan Łukasiewicz, whose mathematical notation was so important that we still use it today, but because English speakers couldn't pronounce his name, instead of it being named after him it's just "Polish notation" and its succe
#rpn across platforms
every network with a public tag surfaceFollow #rpn straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/rpn