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What is the smallest number that has exactly 1 factor?
1 has one factor 1
What is 1 called if not a prime number?
It is called a "unit". Note: by definition, 1 can not be prime because all prime numbers are divisible by exactly 1 AND itself, with the AND inferring that there is a second factor. therefore all prime numbers have exactly 2 factors, 1 AND itself. 1 is the multiplicative identity
What are greatest common factor of the numbers 34 and 38?
The greatest common factor is the highest number that divides exactly into two or more numbers. 34: 1, 2, 17, 34 38: 1, 2, 19, 38 The greatest common factor for 34 and 38 is 2.
Greatest common factor of 14 and 15?
The greatest (or highest) common factor is the highest number that divides exactly into two or more numbers. The greatest common factor of 14 and 15 is 1
When is 1 the greatest common factor of 2 numbers?
1 is a factor of every whole number, and the gcf of two numbers can be 1 if there is no larger factor common to both numbers.
