Math Teachers at Play #51 via Math Mama Writes

Posted on by Denise Gaskins

The new Math Teachers at Play blog carnival is up and running, with 51 math-related topics for your reading pleasure.

Noticing & Wondering

I’m a pentagonal number,
I have just two factors,
and if you put me in base 2, 4 or 16,
I’m a palindrome.
I wonder:
Is there anyone else like me in the number universe?

Go to Math Mama Writes and enjoy!

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