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Ntsc-rs – open-source video emulation of analog TV and VHS artifacts

https://ntsc.rs/
266•gregsadetsky•6h ago•60 comments

Harness engineering: Leveraging Codex in an agent-first world

https://openai.com/index/harness-engineering/
53•pramodbiligiri•1d ago•23 comments

Introducing Boron Buckyballs: Theory that B80 cages can’t be made is disproved

https://cen.acs.org/materials/nanomaterials/buckyballs-boron-buckminster-fullerene-nanomaterials/...
22•crescit_eundo•2d ago•1 comments

Moving beyond fork() + exec()

https://lwn.net/SubscriberLink/1076018/16f01bbbb8e0d1f0/
252•jwilk•11h ago•259 comments

Meta confirms 1000s of Instagram accounts were hacked by abusing its AI chatbot

https://this.weekinsecurity.com/meta-confirms-thousands-of-instagram-accounts-were-hacked-by-abus...
425•speckx•7h ago•151 comments

Public Domain Image Archive

https://pdimagearchive.org/
11•davidbarker•1h ago•1 comments

Zeroserve: A zero-config web server you can script with eBPF

https://su3.io/posts/introducing-zeroserve
194•losfair•10h ago•48 comments

Nvidia is proposing a beast of a CPU system for Windows PCs

https://twitter.com/lemire/status/2062880075117113739
231•tosh•12h ago•426 comments

Sem: New primitive for code understanding – not LSPs, but entities on top of Git

https://ataraxy-labs.github.io/sem/
53•rohanucla•5h ago•22 comments

Show HN: DomainTasker – avoid losing domains and surprise renewals

https://domaintasker.com/
8•si_164•53m ago•3 comments

Show HN: Keybench – Scriptable, extensible performance tool for key value stores

https://github.com/guycipher/keybench
7•alexpadula•2h ago•0 comments

You Can Run

https://magazine.atavist.com/2026/mccann-cocaine-fugitives
100•bryanrasmussen•9h ago•54 comments

Pokemon Emerald Ported to WebAssembly (100k FPS)

https://pokeemerald.com/
276•tripplyons•14h ago•78 comments

Unicode Fonts and Tools for X11

https://www.cl.cam.ac.uk/~mgk25/ucs-fonts.html
13•kristianp•2d ago•2 comments

Google to pay SpaceX $920M a month for compute capacity at xAI data centers

https://www.cnbc.com/2026/06/05/google-to-pay-spacex-920-million-a-month-for-xai-compute-capacity...
144•toephu2•1d ago•714 comments

Show HN: Infinite canvas notes in the non-Euclidean Poincaré disk

https://uonr.github.io/poincake/
122•uonr•4d ago•22 comments

Computex 2026: Are We Heading for the Agentic PC Era Yet?

https://www.eetimes.com/computex-2026-are-we-heading-for-the-agentic-pc-era-yet/
24•rbanffy•5h ago•27 comments

Home alone: Remote work, isolation, and mental health

https://www.science.org/doi/10.1126/science.aec7671
125•speckx•5h ago•112 comments

Ask HN: What was your "oh shit" moment with GenAI?

547•andrehacker•2d ago•944 comments

Benchmarks in Leipzig

https://arxiv.org/abs/2606.05818
124•root-parent•11h ago•44 comments

PyTorch Custom Operation

https://leimao.github.io/blog/PyTorch-Custom-Operation/
19•eigenBasis•5d ago•4 comments

The new bibliomaniacs

https://engelsbergideas.com/notebook/the-new-bibliomaniacs/
67•RickJWagner•13h ago•56 comments

Pentagon raised threat of Israeli spying on U.S. to highest level, sources say

https://www.nbcnews.com/politics/national-security/pentagon-raised-threat-israeli-spying-us-highe...
405•MilnerRoute•7h ago•300 comments

Motorola effectively bricked its entire line of WiFi routers without explanation

https://mashable.com/tech/motorola-wifi-routers-stop-working-motosync-plus-app-down
63•thisislife2•10h ago•22 comments

Running Python code in a sandbox with MicroPython and WASM

https://simonwillison.net/2026/Jun/6/micropython-in-a-sandbox/
78•theanonymousone•11h ago•23 comments

Building Rust Procedural Macros from the Grounds Up

https://www.learnix-os.com/ch02-03-implementing-the-bitfields-proc-macro.html
87•Sagi21805•6d ago•18 comments

Context Sculpting

https://perceptiontheory.bearblog.dev/context-sculpting/
8•perceptronblues•2h ago•2 comments

Summer of '85: DOSBOS is rejected by ANALOG Computing

https://www.goto10retro.com/p/summer-of-85-dosbos-is-rejected-by
50•ibobev•2d ago•11 comments

New U.S. college grads now have higher unemployment than the average worker

https://www.randalolson.com/2026/06/04/recent-grad-unemployment-flip/
149•davidbarker•5h ago•154 comments

Mbodi AI (YC P25) Is Hiring Founding Machine Learning Engineer (Robotics)

https://www.ycombinator.com/companies/mbodi-ai/jobs/WYAcNkX-founding-machine-learning-engineer
1•chitianhao•13h ago
Open in hackernews

Right-Truncatable Prime Counter

https://github.com/EbodShojaei/Right-Truncatable-Primes
9•rainmans•1y ago

Comments

throwawaymaths•1y 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•1y ago
i dont think smaller radixes make the problem more interesting. the problem is interesting because base 10 has a large branching factor
throwawaymaths•1y 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•1y ago
There's a Project Euler problem for finding truncatable prime numbers, from both left and right: https://projecteuler.net/problem=37
thechao•1y 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.