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(NOT AN ELLIPSE!!!) Elliptic curve: y*y = x*x*x + A*x + B for some A and B. Seemingly simple enough (if you've gotten past high school algebra at least). However, if you make some special points, you can create a whole new number system. And there are so many of these (just change your values for A and B).
Elliptic curve cryptography are based on the idea that multiplying by, say, 329857349875 isn't *that* hard... but dividing by it is HELL. It's a reliable one-way function, which is pretty important for encryption! Another application is factorization, but I'm not too sure on that one so ask google ig
In Celeste, a dream super/hyper is a tech that abuses coyote frames you get. In Celeste, coyote frames let you jump basically whenever you get them, no matter what. Usually, this means walking off a ledge but getting that *tiny bit* of extra leniency.
However, once coming out of dream blocks, you get coyote frames as well. They are usually used for dream jumps but can be (ab)used to initiate a hyper. So, dream hyper!
Similar for dream supers (which are the same thing but uncrouched)
dryper = dream hyper
"...yeah the dryper is hard but I count that as part of tetris since the setup is so dependent on it."
They do have a few pitfalls though. I guess I'll say them here: If you demodash into the dream block, you'll always perform a dream super instead of a dream hyper. When dream hypering, a horizontal demo to do the hyper is always better than a down-diagonal dash, as it gives extra coyote frames. You can also dream dash in one direction and dream super/hyper in the opposite direction.
The General Number Field Sieve (which is informally 2/3 of the way towards being polynomial in the number of digits (but is still exponential)) is the best known way to factor large integers, in that it scales the best for very large numbers. We're talking like 150 or more digits. And stop reading urban-dictionary and go ask google or something you nerd (just like me ;3) see also: "Special Number Field Sieve" (not on here!)
For numbers with 150+ digits, if you're not going to use the GNFS (General number field sieve), then tbh just don't bother.