Free Prime Number Birthday Cards

I celebrated a birthday last week and on waking up that morning, I rolled over and told Mr Chicago “I am in my prime!”

This was a serious “geek alert” moment as I was referring to prime numbers. Is it a little worrying I was thinking about mathematical concepts as soon as I became conscious?  Mr Chicago replied …there is the making of a birthday card in that statement. And so the seed was sown…time to put on my graphic designer hat. If you need a little refresher course on what a prime number is click here.

So if you are looking for a birthday card for someone celebrating a prime number birthday and who’d appreciate this fun mathematical fact here you go.

I have created cards cards for ages 7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89 and 97 year olds. I figured 2,3 and 5 year olds were unlikely to get it!

Simply click on the birthday cards below for a full size pdf birthday card you can print to your hearts content.

These cards are for non commercial use only.


Love from

Creative in Chicago


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10 thoughts on “Free Prime Number Birthday Cards

  1. Hi, thank you so much for making these available. I just wanted to let you know that the link for 61 isn’t working.

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