## Perfect age

Today is my birthday! This is the second and (barring any miraculous advances in medical science) final time that my age will be a perfect number. Unfortunately, the first time my age was a perfect number, I didn’t know what a perfect number was.

Assistant Professor of Computer Science at Hendrix College. Functional programmer, mathematician, teacher, pianist, follower of Jesus.
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### 15 Responses to Perfect age

1. Jenni says:

Happy Birthday!

2. Happy birthday! (Dang, you’re young!)

3. Mike says:

Happy perfect bday! I just realized that I’m the same age… guess that makes us both perfect ๐

4. MathPhan says:

Another cool thing about your 28th birthday is that the day of the week is also the same as your original birthday. The day of your birthday changes by 1 each year, or by 2 in leap years. With 28 years and 7 leap years, that results in a change (mod 7) of 0, or the same day.

Unlike a perfect number, you do have a chance of reaching your 56th and 84th birthdays to have this happen again…

Happy birthday!

5. Rick Regan says:

And in its form 1/10/10, today’s date is a binary number — in a sense (http://www.exploringbinary.com/binary-dates-in-2010-and-2011/ ).

6. Dave says:

Happy 28th!

7. Happy Birthday..

8. Robert says:

Nice being perfect, but alas, you will never (also barring medical miracles) be a double-exponent age again (3^3).

9. Nick says:

Happy birthday Brent!

I was excited at my last birthday because my age is now a perfect square. My next birthday, alas, won’t be all that interesting.

• Brent says:

Nick: Your claim is provably false: there are no uninteresting ages! Proof: if there were, there would be a smallest uninteresting age. Which would be rather interesting. ๐

10. Nick says:

I don’t know, … 1729 seems like it would be a most uninteresting age, if I were to live that long!

11. Doug Jenkins says:

Well 1729 was 281 years ago, and 281 (according to Wikipedia) is “prime, twin prime with 283, Sophie Germain prime, sum of the first fourteen primes, sum of seven consecutive primes (29 + 31 + 37 + 41 + 43 + 47 + 53), Chen prime, Eisenstein prime with no imaginary part, centered decagonal number”

So that’s pretty interesting, isn’t it?

Wikipedia also had some story about a guy in hospital being visited in their article about 1729, but it didn’t look very interesting, so I didn’t read it ๐

12. Brent says:

Hehe. =)

13. Tay says:

God, and I thought I talked about numbers a lot. You all just drew circles around me.