news newest ask show jobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

I’ve built a virtual museum with nearly every operating system you can think of

https://virtualosmuseum.org/

274•andreww591•2h ago•57 comments

Apple unveils new accessibility features

https://www.apple.com/newsroom/2026/05/apple-unveils-new-accessibility-features-and-updates-with-...

436•interpol_p•6h ago•231 comments

I’ve joined Anthropic

https://twitter.com/karpathy/status/2056753169888334312

757•dmarcos•3h ago•285 comments

Gaussian Splat of a Strawberry

https://superspl.at/scene/84df8849

385•danybittel•7h ago•147 comments

Gentoo News: Copy Fail, Dirty Frag, and Fragnesia Kernel Vulnerabilities

https://www.gentoo.org/news/2026/05/19/copy-fail-fragnesia-vulnerabilities.html

59•akhuettel•3h ago•13 comments

Show HN: Superlog (YC P26) – Observability that installs itself and fixes bugs

https://superlog.sh/

29•Magnanten•2h ago•26 comments

Gemini 3.5: frontier intelligence with action

https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-5/

92•meetpateltech•42m ago•38 comments

KV Cache Is Becoming the Memory Hierarchy of Inference

https://touchdown-labs.com/blog/kv-cache-memory-hierarchy-inference.html

10•matt_d•2d ago•0 comments

Intro to TLA+ for the LLM Era: Prompt Your Way to Victory

https://emptysqua.re/blog/intro-to-tla-plus-for-the-llm-era/

67•zdw•2d ago•16 comments

CISA Admin Leaked AWS GovCloud Keys on GitHub

https://krebsonsecurity.com/2026/05/cisa-admin-leaked-aws-govcloud-keys-on-github/

270•LelouBil•10h ago•125 comments

Hanoi’s humble beer glass and the memory of a nation

https://sundaylongread.com/2026/05/15/hanois-humble-beer-glass-and-the-memory-of-a-nation/

83•NaOH•1d ago•13 comments

Google I/O

https://io.google/2026/

132•thanhhaimai•1h ago•156 comments

Cursor Cloud Agents Down

https://forum.cursor.com/t/cloud-agents-broken-ii/161036

7•mopatches•55m ago•1 comments

I Found Ultra-Pure Quantum Crystals in an Abandoned Mine in the Atacama Desert

https://medium.com/@breid.at/ultra-pure-quantum-crystals-from-an-abandoned-mine-in-a-mysterious-d...

220•vi_sextus_vi•2d ago•83 comments

The last six months in LLMs in five minutes

https://simonwillison.net/2026/May/19/5-minute-llms/

654•yakkomajuri•17h ago•524 comments

KV Sharing, MHC, and Compressed Attention

https://magazine.sebastianraschka.com/p/recent-developments-in-llm-architectures

8•gmays•1h ago•0 comments

Mini Shai-Hulud Strikes Again: 314 npm Packages Compromised

https://safedep.io/mini-shai-hulud-strikes-again-314-npm-packages-compromised/

307•theanonymousone•13h ago•228 comments

Peter Neumann has died

https://www.tuhs.org/pipermail/tuhs/2026-May/033748.html

279•pabs3•15h ago•23 comments

Show HN: I made a 3D pose maker for artists

https://setpose.com/

51•augustvdv•4h ago•26 comments

An Apple (II) for Teacher

https://technicshistory.com/2026/05/19/an-apple-ii-for-teacher/

44•cfmcdonald•18h ago•12 comments

Show HN: Haystack – Review the PRs that need human attention

https://haystackeditor.com/

10•akshaysg•1d ago•5 comments

OpenBSD 7.9

https://www.openbsd.org/79.html

279•bradley_taunt•5h ago•195 comments

Polypad

https://polypad.amplify.com/

190•ivank•2d ago•22 comments

Cursor Introduces Composer 2.5

https://cursor.com/blog/composer-2-5

261•asar•1d ago•195 comments

Kv4p HT – A homebrew 1W radio (VHF or UHF) that plugs into an Android phone

https://www.kv4p.com/

154•krupan•3d ago•66 comments

Gemini Omni

https://deepmind.google/models/gemini-omni/

16•meetpateltech•46m ago•3 comments

Click (2016)

https://clickclickclick.click/

356•andrewzeno•19h ago•91 comments

Nim-Presto – REST API Framework for Nim Language (2024)

https://github.com/status-im/nim-presto

52•TheWiggles•2d ago•10 comments

Graduates are booing pep talks on AI at college commencements

https://apnews.com/article/ai-college-commencement-anxiety-boo-35aec9bac660eaeb05c5b8d392db2cac

76•1vuio0pswjnm7•50m ago•81 comments

Anthropic acquires Stainless

https://www.anthropic.com/news/anthropic-acquires-stainless

518•tomeraberbach•1d ago•362 comments

Open in hackernews

Right-Truncatable Prime Counter

https://github.com/EbodShojaei/Right-Truncatable-Primes

9•rainmans•12mo ago

Comments

throwawaymaths•11mo 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•11mo ago

i dont think smaller radixes make the problem more interesting. the problem is interesting because base 10 has a large branching factor

throwawaymaths•11mo 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•11mo ago

There's a Project Euler problem for finding truncatable prime numbers, from both left and right: https://projecteuler.net/problem=37

thechao•11mo 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.