Question

Determine the prime factorisation of the following positive integer:

 20570

Answer 1

5	20570
2	4114
11	2057
11	187
17	17
	1

20570 = 2 × 5 × 11 × 11 × 17

∴ \[20570 = 2 \times 5 \times {11}^2 \times 17\]