Look up MILLENNIAL

The year 2001 looks very different in other bases.

Can you construct 1, 2, 3, 4... using the digits of Two Thousand and One....

In the Base:

Year 2001 becomes:

Our Current Record is:

Link to solutions:

Twelve

11T9

Eleven

155T (explain)

Ten

2001

13

Base Ten

Nine

2663

Eight

3721(explain)

56

Base Eight

Seven

5556

Six

13133

Five

31001

The Current Record in the table above indicate that solutions have been achieved for 1, 2, 3... up to and including the number stated. If you have a solution which is different to our published solution then send it to us.

We will publish your name and solution along with your School name. We will even link to your School Web Site if your school has one. If you have a solution that we do not yet have then send it to us. We will publish your name under the "First to Solve" category for that number.

Submitting solutions:

  • Tell us your name, age and the name of your school
  • Tell us the Number (in base Ten!) that you have solved and the Number Base you used.
  • Tell us your solution (if symbols are a problem then explain as clearly as you can in words)
  • Tell us your School's Web Site Address if your school has one

We'd like to hear from you... and while you are visiting don't forget to visit our Home Page

 
The record for 2000 (in any base) is 91 in Base Eleven (without using sub-factorials )
The record for 1999 (in base 10 only) was 139 (using sub-factorials )
The record for 1999 (in base 10 only) was 136 (without using sub-factorials )
The record for 1998 (in base 10 only) was 131 (without using sub-factorials )
 
Read the history of this challenge.
 

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