Our original £100 prize crossnumber is featured on pages 44 and 45 of Issue 02.
- Download Crossnumber #2 as a PDF, or read on!
Submit your answerThis competition has now ended.
Correction: There is an error in clue 4D. The 13th digit is actually larger than the 14th.
Clarification: In 40A ‘divisible’ should read ‘properly divisible’. The answer is not 2.
Clarification: In 9A ‘proper factors’ should be taken to mean factors not equal to the number. 1 should be included.
- Although many of the clues have multiple answers, there is only one solution to the completed crossnumber. As usual, no numbers begin with 0. Use of Python, OEIS, Wikipedia, etc. is advised for some of the clues.
- One randomly selected correct answer will win £100. Three randomly selected runners up will win a Chalkdust t-shirt. The prizes have been provided by G-Research, researchers of financial markets and investment ideas. Find out more at gresearch.co.uk.
To enter, submit the sum of the across clues via this form by 5 December 2015. Only one entry per person will be accepted.This competition has now ended. Winners will be notified by email and announced on our blog by 19 December 2015.