There are many methods to find the prime factors of a number ... by making sure \(2 \times 2 \times 2 \times 5\) is equal to 40. \(2 \times 2 \times 2 \times 5 = 40\), so this answer is correct.

A prime number has exactly two factors, itself and one. The first ten prime numbers are \({2}\), \({3}\), \({5}\), \({7}\), \({11}\), \({13}\), \({17}\), \({19 ...