31513

By A Maths Teacher | Published: 31/05/2013

31 5 13 A Prime Day and a Palindromic Date

What a special day!

The 31st May 2013, or, as we write in Europe, 31 5 13.

And this is what makes it so special:

  • Its a Palindromic Date 31 5 13 – the same forwards as it is backwards
  • Its a Prime Day 31 5 13 – all the numbers in its date are prime numbers
  • AND … 31513 is a Prime Number itself

All those three happening on the same date isn’t going to happen again for a loooooong time.

So enjoy the day, we won’t see its like again for some time (can you work out when?)

Related posts:

  1. Another Palindromic Date
  2. Palindromic, Prime and Other Dates
  3. A(nother) Special Day
  4. Palindromic Numbers
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