---
title: 'FRACTRAN: 14 fractions that produce infinite primes'
link: https://www.youtube.com/watch?v=zuaVFnj4SWY
source: youtube-com-standupmaths
published: 2026-10-30T23:27:05Z
updated: 2026-10-30T23:36:56Z
first_seen: 2026-10-31T02:14:39.472680491Z
authors:
- Stand-up Maths
summary: "Check out Jane Street’s INSIGHT programme: https://jane-st.co/SUM-JS-INSIGHT2027 \n\nIf you're applying for INSIGHT in Hong Kong, applications close on November 8th, 2026. For London, you have until January 3rd, 2027.\n\nPreviously, in the Prime Realm: https://www.youtube.com/watch?v=5vbk0TwkokM\n\nFractran interpreter in Fractran: https://github.com/jbeder/fractran\n\nThanks to Chaim Goodman-Strauss for introducing me to Fractran. They do all sorts of great stuff. https://chaimgoodmanstrauss.com/\n\nFor more unnecessary detail, tickets for upcoming London shows are available here: https://festivalofthespokennerd.com/tickets/\n\nHuge thanks to my Patreon supporters. They give me more than 14 fractions of support. https://www.patreon.com/standupmaths\n\nCORRECTIONS\nNone yet, let me know if you spot anything! \n\nFilming and editing by Alex Genn-Bash\nWritten and performed by Matt Parker\nResearch by Rhys Jones\nProduction and number yeeting by Nicole Jacobus \nMusic by Howard Carter\nDesign by Simon Wright and Adam Robinson\n\nMATT PARKER: Stand-up Mathematician\nWebsite: http://standupmaths.com/"
content: extracted
html: 2026-10-30-fractran-14-fractions-that-produce-infinite-primes.html
remote_preview:
  url: https://i3.ytimg.com/vi/zuaVFnj4SWY/hqdefault.jpg
extra:
  thumbnail: https://i3.ytimg.com/vi/zuaVFnj4SWY/hqdefault.jpg
---

Check out Jane Street’s INSIGHT programme: https://jane-st.co/SUM-JS-INSIGHT2027

If you're applying for INSIGHT in Hong Kong, applications close on November 8th, 2026. For London, you have until January 3rd, 2027.

Previously, in the Prime Realm: https://www.youtube.com/watch?v=5vbk0TwkokM

Fractran interpreter in Fractran: https://github.com/jbeder/fractran

Thanks to Chaim Goodman-Strauss for introducing me to Fractran. They do all sorts of great stuff. https://chaimgoodmanstrauss.com/

For more unnecessary detail, tickets for upcoming London shows are available here: https://festivalofthespokennerd.com/tickets/

Huge thanks to my Patreon supporters. They give me more than 14 fractions of support. https://www.patreon.com/standupmaths

CORRECTIONS\
None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash\
Written and performed by Matt Parker\
Research by Rhys Jones\
Production and number yeeting by Nicole Jacobus \
Music by Howard Carter\
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician\
Website: http://standupmaths.com/