/sci/ - Science & Math

>>11824483
^This.
Or other spaced repetition apps, Anki is my favorite because I can personalize my decks as much as I want in the desktop app and you could get neat plugins for it, but I usually do my flashcard sessions in my phone, and it syncs flawlessly, and the shared decks from others users are usually pretty good. There's other apps like mnemosyne etc, but anki even had a Nintendo DS client, let that sink sink.
Also Memrise has good gamification, and the shared decks are ok.
Spaced Repetition is the best tool if you want to keep a lot of data / factoids in your memory for a long time, it's even better if you combine it with good sleep, exercise and some supplements, turns your brain into an offline wikipedia.

Is (25^n)-1 ever a sum of two integer squares?

(n is a positive integer. 25 is the smallest number for which I don’t know the answer. There are many restrictions on n you can find, but so far I don’t have a definitive answer.)

>>11387381
I like him. I enjoy his podcast because he introduces me to some tech leaders I would have otherwise not have known before, like Jim Keller (aka Silicon Ronin). Wish he would talk more into the architecture of TPU and how they differ to GPUs. Would be an interesting topic.