Mathematical Ideas that Shaped the World. Prime numbers. Plan for this class. Why are prime numbers interesting? What is the Prime Number Theorem? How could prime numbers win you a million dollars? How does public key cryptography work? What food did you bring for the maths picnic?!.
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Mathematical Ideas that Shaped the World
Some mathematical mind reading!
28 = 22x7, 60 = 22x3x5
200x200 Ulam spiral
always a bit less than (x)
Get back over here!!
So far 10,000,000,000,000 zeros have been checked and they all satisfy the conjecture.
"I have never done anything 'useful'. No discovery of mine has made, or is likely to make, directly or indirectly, for good or ill, the least difference to the amenity of the world.“ G.H.Hardy
4538729 x 9957397632?
around we start again
modulo n, or mod n.
decrypt all your messages.
97 x 53 = 5141
56 = 8 (mod 23)
(using the magic of modular arithmetic and some number theory!)