274207281 – 1 this is the largest now

prime numbers are just a man-made pattern represented in our mathematical language. although it may be true that numbers can Define the universe they are no more applicable to its reality then notes on the keyboard. I guess I've never fully understood the significance prime numbers

Best so far!

I think I have various ideas worth spreading, where should I go to?

14:19 well... I bet any GM can beat an android or apple chess app...

hai viewers my name is sreejith ,i introduce a new equation
nx +/- y^2=m^2
here a condition that y or m be the neibhourhood perfect square number of nx
this euation have infinitly many solution when n>x
this equation has alternative solution at which reaches the limit point of x (if n below x then eac each value of n near the x satisfies the above equation so we have to find the maximum of the number below x at which the equation is not satisfied)
for example ; consider the number 45
we consider the number below 45
43<45
43*45+1^2=44^2
41*45+2^2=43^2
.
.
23*45 .there is no perfect square number near 23*45 satisying the above equation
so 23 is the limit point of 45
45 is not a prime number (cannot be expressed as sum of two square) so there is a solution below 23 that satisfying the above equation
it is true because 45*1+2^2=7^2
if x is a prime number(cannot be expressed as sum of two squares) and their doubles cannot have a solution below the limit point
in the set of 4n+3 numbers .consider 2*(4n+3) we take the difference between the neibhourhood of upper perfect square number of 2*(4n+3) and 2*(4n+3).if 4n+3 is not a prime number the difference will repeat atleast one times for the number n< limitpoint in the above equation
in the set of 2n numbers.consider 2*2n. we take the difference between the neibhourhood of upper perfect square number of 2*2n and 2*2n.if n is a prime number the difference will repeat one times for the number n< the limitpoint in the above equation
in the set of 2n^2+1 . we consider the region above the limit point and below the limit near perfect square number .if 2n^2+1 is not a prime number then there exist a number n in the region such that nx will leave the differences from the neibhourhood perfect square numbers will be perfect square numbers

Spence you legend. The first person to broadcast us on national radio too!!

the higgs would have been discovered at the COllider in TX except Congress scuttled it and then bailed out Wall St....The USA is going down and being sold out by the people who are sworn to protect us

It's January 2016 and he needs to update that slide again: 2^74,207,281-1.
Maths for the win!

wow this was so inspiring

Wow

2,147,483,647 is my favorite!

You can find interesting facts and puzzles about Prime Numbers and Magic Squares, Smith Numbers, and Arithmetic and Palindromic Primes on Glenn Westmore's blog.

Awesome talk

Great talk and not very intertaining. Wish there were more info but still good.

Well done Spence, I've never been excited about maths until now. Not a word wasted, and delivered with precision and passion.

Pucci, is that you?

Consider this : http://www.codeproject.com/Articles/875175/Prime-Number-Distribution-Sequence

Yes, this is why I study numerology and astrology too!!

Interesting talk, but he confused Descartes and Galileo. Galileo is the one who said that about math.