[sigio]

It's a lot harder to make a mistake in binary mersenne primes, and if you loop your video's, 1 person should be able to do it quickly, so might be a bit boring.

[henearkr]

I you allow to replay the videos it's going to be boring anyway, in binary as well as in decimal.

For example, in decimal, you can group the digits by pairs, and you just need 100 videos.

[dullcrisp]

Or if you don’t you just need ten videos