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Show HN: LocalGPT – A local-first AI assistant in Rust with persistent memory

https://github.com/localgpt-app/localgpt
125•yi_wang•4h ago•35 comments

Haskell for all: Beyond agentic coding

https://haskellforall.com/2026/02/beyond-agentic-coding
53•RebelPotato•3h ago•10 comments

SectorC: A C Compiler in 512 bytes (2023)

https://xorvoid.com/sectorc.html
247•valyala•12h ago•49 comments

Speed up responses with fast mode

https://code.claude.com/docs/en/fast-mode
165•surprisetalk•11h ago•155 comments

Software factories and the agentic moment

https://factory.strongdm.ai/
195•mellosouls•14h ago•350 comments

Total surface area required to fuel the world with solar (2009)

https://landartgenerator.org/blagi/archives/127
18•robtherobber•4d ago•5 comments

Brookhaven Lab's RHIC concludes 25-year run with final collisions

https://www.hpcwire.com/off-the-wire/brookhaven-labs-rhic-concludes-25-year-run-with-final-collis...
73•gnufx•10h ago•59 comments

LLMs as the new high level language

https://federicopereiro.com/llm-high/
62•swah•4d ago•113 comments

Hoot: Scheme on WebAssembly

https://www.spritely.institute/hoot/
180•AlexeyBrin•17h ago•35 comments

Stories from 25 Years of Software Development

https://susam.net/twenty-five-years-of-computing.html
171•vinhnx•15h ago•17 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
319•jesperordrup•22h ago•97 comments

First Proof

https://arxiv.org/abs/2602.05192
134•samasblack•14h ago•77 comments

Vouch

https://twitter.com/mitchellh/status/2020252149117313349
62•chwtutha•2h ago•10 comments

Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

https://github.com/Momciloo/fun-with-clip-path
82•momciloo•12h ago•16 comments

Wood Gas Vehicles: Firewood in the Fuel Tank (2010)

https://solar.lowtechmagazine.com/2010/01/wood-gas-vehicles-firewood-in-the-fuel-tank/
31•Rygian•2d ago•7 comments

Why there is no official statement from Substack about the data leak

https://techcrunch.com/2026/02/05/substack-confirms-data-breach-affecting-email-addresses-and-pho...
14•witnessme•1h ago•4 comments

Al Lowe on model trains, funny deaths and working with Disney

https://spillhistorie.no/2026/02/06/interview-with-sierra-veteran-al-lowe/
104•thelok•14h ago•22 comments

Show HN: A luma dependent chroma compression algorithm (image compression)

https://www.bitsnbites.eu/a-spatial-domain-variable-block-size-luma-dependent-chroma-compression-...
40•mbitsnbites•3d ago•4 comments

FDA intends to take action against non-FDA-approved GLP-1 drugs

https://www.fda.gov/news-events/press-announcements/fda-intends-take-action-against-non-fda-appro...
112•randycupertino•7h ago•233 comments

Start all of your commands with a comma (2009)

https://rhodesmill.org/brandon/2009/commands-with-comma/
577•theblazehen•3d ago•208 comments

Homeland Security Spying on Reddit Users

https://www.kenklippenstein.com/p/homeland-security-spies-on-reddit
59•duxup•1h ago•13 comments

The AI boom is causing shortages everywhere else

https://www.washingtonpost.com/technology/2026/02/07/ai-spending-economy-shortages/
304•1vuio0pswjnm7•18h ago•482 comments

I write games in C (yes, C) (2016)

https://jonathanwhiting.com/writing/blog/games_in_c/
189•valyala•12h ago•173 comments

Microsoft account bugs locked me out of Notepad – Are thin clients ruining PCs?

https://www.windowscentral.com/microsoft/windows-11/windows-locked-me-out-of-notepad-is-the-thin-...
144•josephcsible•10h ago•178 comments

Selection rather than prediction

https://voratiq.com/blog/selection-rather-than-prediction/
34•languid-photic•4d ago•15 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
233•limoce•4d ago•125 comments

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
904•klaussilveira•1d ago•276 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
150•speckx•4d ago•235 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
303•isitcontent•1d ago•39 comments

Reinforcement Learning from Human Feedback

https://rlhfbook.com/
118•onurkanbkrc•16h ago•5 comments
Open in hackernews

Right-Truncatable Prime Counter

https://github.com/EbodShojaei/Right-Truncatable-Primes
9•rainmans•8mo ago

Comments

throwawaymaths•8mo ago
Curious about base 2. Obviously if you hit a 0 it's immediately not prime, but maybe adjust the rules so:

- you drill through as many 0's on the right.

- you finish on 1.

3, 5, 7, 11, 13, 15, 17 are all right truncatable, 19 is the first non-truncatable prime in this scheme.

nh23423fefe•8mo ago
i dont think smaller radixes make the problem more interesting. the problem is interesting because base 10 has a large branching factor
throwawaymaths•8mo ago
I think in the base2 reformulation I propose we do not know for certain if the list of numbers terminates, as all Fermat primes are in the set and we don't know if there are infinitely many Fermat primes.

For base-10 and the original rules the set is provably closed.

"Drilling through zeros" makes the branching unbounded.

jinwoo68•8mo ago
There's a Project Euler problem for finding truncatable prime numbers, from both left and right: https://projecteuler.net/problem=37
thechao•8mo ago
Just in case any else is wondering: there are only 83 right-truncatable primes (RTP) and that is it. There's two constraints that let you see this "immediately":

1. An RTP must start with {2,3,5,7,9}; and,

2. An RTP must end with {1,3,7,9}.

So, let's take the largest RTP (73939133) and try to "extend" it: there are only four possible extensions: 73939133[1], 73939133[3], 73939133[7], 73939133[9]. None of these are prime. This holds for the other 8-digit RTPs. Therefore, there is no extension to a 9-or-longer RTP. Thus, the list is exhaustive.