What are some mind-blowing facts about mathematics?

 383

At first place it seems like yet another boring prime number, but it has some unique characteristics that make it cool.

So 383 is not just a prime but also a palindrome

[1]

 (sequence of characters which reads the same backward as forward)

• Also it is the sum of first three palindromic 3-digit prime numbers

383 = 101 + 131 + 151

• It’s also the smallest number (prime) which is the sum of a prime and the reversal of that prime.

(241 is that prime and 142 is its reversal)

241 + 142 = 383

• It’s also a thing called woodall prime
  [2]
   .

(please neglect my shitty handwriting)

So, woodall primes are discovered or first used by Herbert Woodall

[3]

 in 1917.

Following are some examples of woodall primes

$7=2\ast 2^2-1$

$23=3\ast$$2^3-1$

and finally,

$383=6\ast 2^6-1$ (it’s the third woodall prime)

• The last woodall prime we found was in the 90th anniversary of Woodall primes (i.e in 2007), which is

$3,752,948\times 2^{3,752,948}-1$

That resultant prime number has got 1,129,757 digits and of course I can’t write them here.