Calculating the Combination

  • The answer is a four digit number.
  • All the digits are different
  • The starting and ending digits are odd, the middle digits are even.
  • Some of its factors include 19, 173 and 3287.

And the answer is?

Who's beaten this one?

There are currently 90 challenges, with a maximum possible value of 354 points.

New Challenges
Unusual Translation
Hashed II
Beep Beep
JSON and the Argonauts III
JSON and the Argonauts II
JSON and the Argonauts I

Most Popular Challenges
What's that say? I
A curious escape
Computer Talk
What's that say? III
Base 8^2
I came, I saw, I encrypted
What goes there?

3 hackers solved 6 challenges in 48 hours
Stego-what? by Elian
Base 8^2 by ?j
What's that say? IV by ehgey
Base 8^2 by ehgey
What's that say? I by ehgey
What's that say? III by ehgey

View more stats

Member of The Internet Defense League

Care and feeding instructions