Consider these three numbers expressed in scientific notation: 8.2 × 10-3, 5.2 × 10-6, and 4.1 × 10-6. Which number is the greatest, and by how many times is it greater than the smallest number?

The greatest number is 8.2 × 10-3, and it is greater than the smallest number (4.1 × 10-6) by a factor of 2,000.