Math rules the universe

Euclid isn't a fandom, or else I would have joined up sooner.

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If you’re looking for random math knowledge that is in small doses, not at all applicable to everyday life, and completely displays the beauty of math, this is your website.

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If Enlightenment-Era Philosophers Were Educated About Quantum Mechanics...

Hobbes: Good thing everyone forgets that the first half of The Leviathan is based on science and metaphysics, not politics.

Hume: Thank God someone finally gets it.

Kant: Ahhh... so this is what I mean when I coined the term “unity of aperception”.

Descartes: “I totally knew the world worked like this. Using uh... reason. And, uh... proofs.

Leibniz: *Can’t form a coherent response because he’s lying on the floor, sobbing*

Rousseau: Yeah, I don’t know what this has to do with the perfect Social Contract, peace homie.

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How to find simple factors of large numbers

A number is divisible by:

2 - If it’s even (the last digit is even).

3 - If the sum of the number’s digits is divisible by 3.

4 - If you divide it by 2 and the quotient is even.

5 - If the final digit ends in 0 or 5.

6 - If it is divisible by both 2 and 3

7 - If (this one is trickier) you take the LAST digit of the number, multiply it by 2, then subtract it from the number formed by the remaining digits. Take the new number, and if it has more than one digit, repeat. Keep going until you have one digit. If that digit is 0 or 7, it is divisible by 7. Example: 259---> 25 - 2(9) = 25 - 18 = 7

8 - Keep dividing by 2

9 - If the sum of the number’s digits is divisible by 9 (or just keep dividing by 3).

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urlame

Thanks :)

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2017 is a prime number.