Question

Express each of the following numbers as a product of its prime factors. 

i) 140 

ii) 156 

iii) 3825 

iv) 5005 

v) 7429

Answer 1

i) 140

∴ 140 = 2 × 2 × 5 × 7 = 2² × 5 × 7

ii) 156

∴ 156 = 2 × 2 × 3 × 13 = 2² × 3 × 13

iii) 3825

∴ 3825 = 3 × 3 × 5 × 5 × 17 = 3² × 5² × 17

iv) 5005

∴ 5005 = 5 × 7 × 11 × 13

v) 7429

∴ 7429 = 17 × 19 × 23