news newest ask show jobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Setting up a free *.city.state.us locality domain

https://fredchan.org/blog/locality-domains-guide/

270•speckx•3h ago•75 comments

Open Source Resistance: keep OSS alive on company time

https://ossresistance.com/

126•mikemcquaid•2h ago•45 comments

A History of IDEs at Google

https://laurent.le-brun.eu/blog/a-history-of-ides-at-google

57•laurentlb•4d ago•23 comments

Launch HN: Ardent (YC P26) – Postgres sandboxes in seconds with zero migration

https://www.tryardent.com/

24•vc289•1h ago•10 comments

S-100 Virtual Workbench

https://grantmestrength.github.io/S100/

50•rbanffy•2h ago•8 comments

Xs of Y – roguelike that names itself every run. Written in 4kLoC

https://github.com/nooga/xsofy

64•andsoitis•3d ago•25 comments

Reverting the incremental GC in Python 3.14 and 3.15

https://discuss.python.org/t/reverting-the-incremental-gc-in-python-3-14-and-3-15/107014

134•curiousgal•3d ago•41 comments

The Emacsification of Software

https://sockpuppet.org/blog/2026/05/12/emacsification/

45•rdslw•10h ago•1 comments

Heritability of human life span is ~50% when heritability is redefined

https://dynomight.net/lifespan/

48•surprisetalk•1d ago•23 comments

Leaving GitHub for Forgejo

https://jorijn.com/en/blog/leaving-github-for-forgejo/

400•jorijn•5h ago•218 comments

The US is winning the AI race where it matters most: commercialization

https://avkcode.github.io/blog/us-winning-ai-race.html

62•akrylov•4h ago•164 comments

An idiot's guide to lead optimisation for proteins

https://magnusross.github.io/posts/protein-lead-optimisation-1/

94•magni121•2d ago•7 comments

New stainless steel can survive conditions for hydrogen production in seawater

https://www.sciencedaily.com/releases/2026/05/260510030950.htm

241•HardwareLust•2d ago•105 comments

Preserving Fisher-Price Pixter

https://dmitry.gr/?r=05.Projects&proj=37.%20Pixter

167•dmitrygr•2d ago•37 comments

I moved my digital stack to Europe

https://monokai.com/articles/how-i-moved-my-digital-stack-to-europe/

682•monokai_nl•6h ago•457 comments

Haiku

https://www.haiku-os.org

104•tosh•1h ago•47 comments

Restore full BambuNetwork support for Bambu Lab printers

https://github.com/FULU-Foundation/OrcaSlicer-bambulab

614•Murfalo•20h ago•277 comments

Substrate (YC S24) Is Hiring a Technical Success Manager

https://www.ycombinator.com/companies/substrate/jobs/T2fMBhD-technical-success-manager

1•kunle•5h ago

Show HN: Needle: We Distilled Gemini Tool Calling into a 26M Model

https://github.com/cactus-compute/needle

585•HenryNdubuaku•23h ago•172 comments

Twin brothers wipe 96 government databases minutes after being fired

https://arstechnica.com/tech-policy/2026/05/drop-database-what-not-to-do-after-losing-an-it-job/

56•jnord•19h ago•16 comments

Deterministic Fully-Static Whole-Binary Translation Without Heuristics

https://arxiv.org/abs/2605.08419

272•matt_d•13h ago•64 comments

Nailing jelly to a wall: is it possible? (2005)

https://greem.co.uk/otherbits/jelly.html

45•microsoftedging•4d ago•16 comments

Web Server on a Nintendo Wii

http://wii.sjmulder.nl/

80•adunk•3d ago•27 comments

Using OR-Tools CP-SAT for Scheduling Problems

https://atalaykutlay.com/or-tools-cp-sat-for-scheduling-problems.html

58•akutlay•6h ago•22 comments

Kraftwerk's radical 1976 track

https://www.bbc.com/culture/article/20260511-kraftwerks-radical-1976-track-radioactivity-became-a...

216•tcp_handshaker•18h ago•189 comments

Kickstarter is forced to ban adult content by payment processors

https://kotaku.com/kickstarter-is-the-latest-platform-seemingly-forced-to-ban-adult-content-by-pa...

219•stalfosknight•2h ago•166 comments

50K Tahoe residents need power as utility eyes redirecting lines to data centers

https://fortune.com/2026/05/12/lake-tahoe-data-center-49000-residents-power-source/

80•cdrnsf•2h ago•75 comments

Cost of enum-to-string: C++26 reflection vs. the old ways

https://vittorioromeo.com/index/blog/refl_enum_to_string.html

48•sagacity•9h ago•52 comments

How to make your text look futuristic (2016)

https://typesetinthefuture.com/2016/02/18/futuristic/

456•_vaporwave_•21h ago•57 comments

CERT is releasing six CVEs for serious security vulnerabilities in dnsmasq

https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html

358•chizhik-pyzhik•23h ago•199 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.