To have an LCM you must have two or more numbers.
The factors of 191 are 1 and 191, so it is a Prime number. It will only be a common multiple with its own multiples: 382, 573, 764, 955, etc.
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The least common multiple of 14 and 27 is 378
The least common multiple of 6 and 34 is 102.
The least common multiple of 35 , 13 = 455The least common multiple of 35 , 13 = 455
There is not a least common multiple of a single number, such as 78, because there cannot be a least common multiple without two or more numbers to compare. Common multiples are multiples that the numbers being compared have in common. The least common multiple is the smallest multiple that all the numbers being compared have in common. Examples: The least common multiple of 18 and 78 is 234. The least common multiple of 52 and 78 is 156. The least common multiple of 78 and 195 is 390.
The least common multiple, or LCM.