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Granite 4.1: IBM's 8B Model Matching 32B MoE

https://firethering.com/granite-4-1-ibm-open-source-model-family/
102•steveharing1•1h ago•41 comments

Mozilla's Opposition to Chrome's Prompt API

https://github.com/mozilla/standards-positions/issues/1213
188•jaffathecake•4h ago•80 comments

Where the goblins came from

https://openai.com/index/where-the-goblins-came-from/
735•ilreb•8h ago•430 comments

Noctua releases official 3D CAD models for its cooling fans

https://www.noctua.at/en/3d-cad-models
313•embedding-shape•2d ago•72 comments

Zed 1.0

https://zed.dev/blog/zed-1-0
1918•salkahfi•21h ago•609 comments

The Zig project's rationale for their anti-AI contribution policy

https://simonwillison.net/2026/Apr/30/zig-anti-ai/
375•lumpa•9h ago•185 comments

A Primer on Bézier Curves – So What Makes a Bézier Curve?

https://pomax.github.io/bezierinfo/
20•mostlyk•1d ago•2 comments

Copy Fail

https://copy.fail/
1082•unsnap_biceps•18h ago•384 comments

Craig Venter has died

https://www.jcvi.org/media-center/j-craig-venter-genomics-pioneer-and-founder-jcvi-and-diploid-ge...
254•rdl•10h ago•47 comments

"Parse, don't validate" through the years with C++

https://derekrodriguez.dev/parse-dont-validate-through-the-years-with-c-/
39•dwrodri•2d ago•8 comments

How to Disable Firefox's New Emoji Picker

https://emsh.cat/en/how-to-disable-firefoxs-emoji-picker/
7•embedding-shape•1h ago•12 comments

Cursor Camp

https://neal.fun/cursor-camp/
1008•bpierre•20h ago•162 comments

Alignment whack-a-mole: Finetuning activates recall of copyrighted books in LLMs

https://github.com/cauchy221/Alignment-Whack-a-Mole-Code
153•reconnecting•9h ago•115 comments

GCC 16 has been released

https://gcc.gnu.org/gcc-16/changes.html
19•HeliumHydride•35m ago•0 comments

Biology is a Burrito: A text- and visual-based journey through a living cell

https://burrito.bio/essays/biology-is-a-burrito
130•the-mitr•8h ago•18 comments

DataCenter.FM – background noise app featuring the sound of the AI bubble

https://datacenter.fm/
39•louisbarclay•4h ago•8 comments

London to Calcutta by Bus (2022)

https://www.amusingplanet.com/2022/08/london-to-calcutta-by-bus.html
80•CGMthrowaway•1d ago•26 comments

The Duolingo taxi test–could being rude to the driver cost you your dream job?

https://phys.org/news/2026-04-duolingo-taxi-rude-driver-job.html
3•i7l•2d ago•0 comments

FastCGI: 30 years old and still the better protocol for reverse proxies

https://www.agwa.name/blog/post/fastcgi_is_the_better_protocol_for_reverse_proxies
359•agwa•19h ago•87 comments

OpenTrafficMap

https://opentrafficmap.org/
293•moooo99•16h ago•77 comments

1.4 GW: battery storage at former Grohnde nuclear power plant

https://www.heise.de/en/news/1-4-GW-Huge-battery-storage-at-former-Grohnde-nuclear-power-plant-11...
15•pantalaimon•1h ago•3 comments

Monad Tutorials Timeline

https://wiki.haskell.org/Monad_tutorials_timeline
47•brudgers•7h ago•19 comments

Mike: open-source legal AI

https://mikeoss.com/
120•noleary•11h ago•46 comments

Why isn't AMD's MI300X competitive?

https://newsletter.semianalysis.com/p/mi300x-vs-h100-vs-h200-benchmark-part-1-training
35•colonCapitalDee•2d ago•25 comments

HERMES.md in commit messages causes requests to route to extra usage billing

https://github.com/anthropics/claude-code/issues/53262
1162•homebrewer•17h ago•491 comments

An open-source stethoscope that costs between $2.5 and $5 to produce

https://github.com/GliaX/Stethoscope
268•0x54MUR41•21h ago•114 comments

Laws of UX

https://lawsofux.com/
289•bobbiechen•19h ago•46 comments

Copy-fail-destroyer: K8s remediation for CVE-2026-31431

https://github.com/NorskHelsenett/copy-fail-destroyer
7•evenh•2h ago•1 comments

Functional programmers need to take a look at Zig

https://pure-systems.org/posts/2026-04-29-functional-programmers-need-to-take-a-look-at-zig.html
151•xngbuilds•9h ago•107 comments

Why I still reach for Lisp and Scheme instead of Haskell

https://jointhefreeworld.org/blog/articles/lisps/why-i-still-reach-for-scheme-instead-of-haskell/...
239•jjba23•1d ago•129 comments
Open in hackernews

Right-Truncatable Prime Counter

https://github.com/EbodShojaei/Right-Truncatable-Primes
9•rainmans•11mo 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.