The answer is 97 · 113.
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.