Bonjour,
1512 = 2 * 756 = 2 * 2 * 378 = 2 * 2 * 2 * 189 = 2³ * 3 * 3 * 21 = 2³ * 3³ * 7
3150 = 2 * 1575 = 2 * 5 * 315 = 2 * 5 * 5 * 63 = 2 * 5² * 3² * 7 = 2 * 3² * 5² * 7
