It's 11/11/11 -- and a palindrome, too!

[DoYouKubuntu]

I love today's date, and I know lots of others do, too. But I wonder how many realize that today's date squared produces a palindrome: 111111 X 111111 = 12345654321

Definitely adds to the coolness factor.

[SteveRiley]

Re: It's 11/11/11 -- and a palindrome, too!

Woo hoo, a pattern!

1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
...

There's probably a formula to describe this...

[DoYouKubuntu]

Re: It's 11/11/11 -- and a palindrome, too!

Oh, I like that! And I'm sure you're right, there probably is a formula to describe it, but I have no idea what it might be.

[Snowhog]

Re: It's 11/11/11 -- and a palindrome, too!

Numeric Palindromes

[DoYouKubuntu]

Re: It's 11/11/11 -- and a palindrome, too!

Very cool link, Snowhog. Thanks for posting it.

[woodsmoke]

Re: It's 11/11/11 -- and a palindrome, too!

One of the reasons that a lot of card tricks work.

woodsmoke