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2011 Date Oddity – Birth Year Plus Age Equals 111

by Brett M. Christensen

This circulating message noted that if you add the last two digits of your birth year to the age that you were in the year 2011 you will come up with 111.  Theis number was significant in the year 2011 because the year had four dates that consist of multiples of the number 1, such as 11/11/11.

This message was shared via Facebook and other social networks and also circulated via email. 
It first notes that the year 2011 featured four unusual dates that are made up of multiples of the number one, specifically 1/1/11, 1/11/11, 11/1/11, and 11/11/11. It then outlined the following math trick.

If you add the last two digits of the year you were born to the age that you will be this year, your answer will be the number 111. The message implies that the answer “111” is particularly significant because of the unusual prevalence of “1’s” in 2011 dates.

Of course, it is certainly true that 2011 has four dates made up of multiple “1’s.”

And the math trick does work for people born in the last century. For example, I was born in the year 1963. I will be turning 48 this year. So:

  • 63 + 48 = 111

For those born this century, the trick still works but the answer will be two digits rather than three. For example, if a person was born in 2005, he or she would be turning 6 this year. So:

  • 05 + 6 = 11

However, except for the prevalence of dates that have multiples of the number 1, the trick is not specific to the year 2011. For example, in 2010 the calculation came to the number 110, i.e. the last two digits are the same as the year. For example, given that I was born in 1963:

  • 2010: 63 + 47 = 110
  • 2009: 63 + 46 = 109
  • 2012: 63 + 49 = 112

Thus, while the trick is certainly interesting – at least at first glance – it is not specifically connected to the year 2011.

In fact, broken down, the “trick” is actually fairly basic math.  A post on the Math Questions blog provides a more in-depth discussion on the issue.


Subject: oddly strange

This year we will experience 4 unusual dates…. 1/1/11, 1/11/11, 11/1/11, 11/11/11 ……… So figure this out…. take the last 2 digits of the year you were born plus the age you will be this year and it WILL EQUAL …. 111

Importance Notice

After considerable thought and with an ache in my heart, I have decided that the time has come to close down the Hoax-Slayer website.

These days, the site does not generate enough revenue to cover expenses, and I do not have the financial resources to sustain it going forward.

Moreover, I now work long hours in a full-time and physically taxing job, so maintaining and managing the website and publishing new material has become difficult for me.

And finally, after 18 years of writing about scams and hoaxes, I feel that it is time for me to take my fingers off the keyboard and focus on other projects and pastimes.

When I first started Hoax-Slayer, I never dreamed that I would still be working on the project all these years later or that it would become such an important part of my life. It's been a fantastic and engaging experience and one that I will always treasure.

I hope that my work over the years has helped to make the Internet a little safer and thwarted the activities of at least a few scammers and malicious pranksters.

A Big Thank You

I would also like to thank all of those wonderful people who have supported the project by sharing information from the site, contributing examples of scams and hoaxes, offering suggestions, donating funds, or helping behind the scenes.

I would especially like to thank David White for his tireless contribution to the Hoax-Slayer Facebook Page over many years. David's support has been invaluable, and I can not thank him enough.

Closing Date

Hoax-Slayer will still be around for a few weeks while I wind things down. The site will go offline on May 31, 2021. While I will not be publishing any new posts, you can still access existing material on the site until the date of closure.

Thank you, one and all!

Brett Christensen,