The GCF is the first number.
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To find the second common multiple of two numbers, you first need to identify the least common multiple (LCM) of the two numbers. The LCM is the smallest number that is a multiple of both numbers. Once you have the LCM, you can then find the second common multiple by adding the LCM to the LCM itself. This will give you the second common multiple of the two numbers.
If the second number is a multiple of the first number, then the greatest common factor (GCF) would be the first number itself. This is because the GCF is the largest number that divides both numbers evenly, and since the second number is a multiple of the first number, the first number would be the largest common factor. So, the GCF in this case would be the first number.
The first number is a multiple of the second.
Just multiply the first five prime numbers! 2x3x5x7x11 = 6x35x11 = 210x11 = 2310. Any multiple of this number "has the first five prime numbers as factors", but 2310 is the smallest such number.
2520 is the smallest multiple of of first ten natural numbers.