π

p is a remarkable number. Books, chapters and web pages have been written to describe its various facets. There are even people crazy about it.

Have you noticed that

The last 5 digits in the expansion I cite are a palindrome 32823
There is another one starting with th 19th digit: 46264
Among 115 digits after the decimal point there are the following pairs: 33, 88, 99, 44, 99, 11
There is a 5-digit stretch consisting entirely of powers of 2: 82148
There is another consisting of multiples of 3: 69399

I also wrote a page, almost a lesson plan, suitable for middle schoolers. Determination of p.

The decimal digits of π are computed one by one. The hexadecimal digits may be computed independently by the Spigot algorithm.

Related material Read more...

	What's a number?
	Irrational number to an irrational power may be rational
	Bisector of an imaginary angle may be real
	Distances from the square root of 2
	Almost every integer has a digit 3 in it

71921306