(Correction: forgot to write 19 on the list of primes at 6 minutes). Here’s a bonus video about shortcuts for checking if a number is prime! Afterwards, to see a FORMULA for checking if a number if prime, check out the new episode on the main channel here: https://youtu.be/jx2qGlNwiP4

Special thanks to my Patreon supporters at https://www.patreon.com/comboclass
Tybie Fitzhugh, Henry Spencer, Mitch Harding, YbabFlow, Plenty W, Quinn Moyer, Julius 420, Philip Rogers, Ilmori Fajt, Brandon, August Taub, Ira Sanborn, Matthew Chudleigh, Cornelis Van Der Bent, Craig Butz, Mark S, Thorbjorn M H, Mathias Ermatinger, Edward Clarke, and Christopher Masto, Joshua S, Max, Joost Doesberg, Adam, Chris Reisenbichler, and Stan Seibert.

Combo Class links:
Patreon: https://www.patreon.com/comboclass
Newest episode on the main channel: https://youtu.be/jx2qGlNwiP4
Subreddit: https://www.reddit.com/r/comboClass/
Discord: https://discord.gg/cHHvDcPPuc

This bonus video was filmed by Carlo Trappenberg.

Combo Class, taught by Domotro, is a crazy educational show where you can have fun learning rare things about math, science, language, and more! This is the channel for Combo Class SHORTS and EXTRAS – make sure you’re also subscribed to the main Combo Class channel where full episodes go!

DISCLAIMER: any use of fire, tools, or other science experiments in this series is always done in a safe and professional way. Do not try to copy any actions you see in this series yourself.

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