105² - 8² is the differences of squares. The general formula of the differences of squares can be expressed as: a² - b² = (a - b)(a + b) In expression 105² - 8², we can cay that a = 105 and b = 8. Therefore: 105² - 8² = (105 - 8)(105 + 8) = 97 · 113 Both 97 and 113 are prime numbers.