The least common multiple of 397 and 1 is 397.
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The number 397 is a prime number, so it only has two factors: 1 and 397.
1, 397.
Since 397 is divisible by only itself and 1, it is a prime number.
397 is a prime number, therefore prime factorization of 397 = 397.
The LCM is: 7