Numbers

123456789101112131415161718
Across
  1. 3. A four-sided shape with right angles
  2. 6. A method of coding information to protect it
  3. 8. A number with two or more factors, eg 12
  4. 13. A number that is divisible by 2
  5. 16. Endless or boundless
  6. 17. 49 and 14 are both _______ of 7
  7. 18. Limited or having boundaries
Down
  1. 1. The result of multiplying 2 or more factors
  2. 2. A whole number that can be multiplied by another whole number to produce a given product
  3. 4. A financial institution
  4. 5. A hue or tint
  5. 7. A tropical fruit with a spiky exterior
  6. 9. A number that is not divisible by 2
  7. 10. To foresee a future event or trend
  8. 11. To recognize or establish the identity of something
  9. 12. A repeated design or arrangement
  10. 14. A number with exactly two factors, itself and 1
  11. 15. A number that is the result of multiplying a number by itself