LCM( 1, 75, 1, 265, 1, 115 ) = 91425
Step 1: Write down factorisation of each number:
1 = 1
75 = 3 · 5 · 5
1 = 1
265 = 5 · 53
1 = 1
115 = 5 · 23
Step 2 : Match primes vertically:
1 | = | 1 | ||||||||||
75 | = | 3 | · | 5 | · | 5 | ||||||
265 | = | 5 | · | 53 | ||||||||
115 | = | 5 | · | 23 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
1 | = | 1 | ||||||||||||
75 | = | 3 | · | 5 | · | 5 | ||||||||
265 | = | 5 | · | 53 | ||||||||||
115 | = | 5 | · | 23 | ||||||||||
LCM | = | 1 | · | 3 | · | 5 | · | 5 | · | 23 | · | 53 | = | 91425 |