Numbers

12345678
Across
  1. 4. - A number multiplied by itself. (6)
  2. 5. Ratio - A mathematical constant often found in art and nature. (11)
  3. 6. - A number greater than 1 that cannot be formed by multiplying two smaller natural numbers. (5)
  4. 7. - Famous sequence where each number is the sum of the two preceding ones. (8)
Down
  1. 1. - Base-16 number system often used in computing. (12)
  2. 2. - Renowned mathematician known for his contributions to number theory and analysis. (5)
  3. 3. - A positive integer that is equal to the sum of its proper divisors. (7)
  4. 4. Root - The value that, when multiplied by itself, gives a certain number. (11)
  5. 6. - The ratio of a circle's circumference to its diameter. (2)
  6. 8. - Number system with base 2, using only 0 and 1. (6)