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Sunday Times Teaser 2563 – Prime Time

by Andrew Skidmore

Published: 6 November 2011 (link)

In this addition sum I have consistently replaced digits by letters, with different letters for different digits, and I have ended up with another correct addition sum.

    O N E
    T W O
  F I V E
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E I G H T

What is the prime number NOW?

2 Comments Leave one →
  1. Brian Gladman permalink

    This is easy with my AlphaSum alphametic sum solver and my number theory library:

  2. geoffrounce permalink

    I tried a two stage permutation, finding ONE, TWO and NOW in the first stage and FIVE and EIGHT in the second stage.

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