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They are: 2, 3 and 107
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∙ 8y ago
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Is 642 a prime or composite number?
The number 642 is not a prime number as it can be divided by 2 aswell as itself and one.
What are the factors and prime factors of 642?
1, 2, 3, 6, 107, 214, 321, 642 2, 3 and 107 are prime.
What is the prime number of 642?
The prime factorization of 642 is 2 x 3 x 107.
Is 642 a prime number?
Just by looking at it, without trying any factors to see if they work, you can see-- 642 is even, i.e. divisible by 2, since it ends in '2'-- 642 is divisible by 3, since its digits add up to (6+4+2) = 12 which is divisible by 3.Just looking at 642, you already know of at least 2 factors that it has besides '1' and itself,so it can't be a prime number.
Is 642 prime?
No, the first give-away is that it is an even number (divisible by 2).
What is the difference between factors of a number and prime factors of a number?
All numbers have factors. Some factors are prime numbers. These are known as prime factors. The set of prime factors is a subset of the set of factors for any given number.
What are the prime factors of a composite prime number?
There is not such a thing as a composite prime number. A prime number has exactly two factors. A composite number has more than two factors.
What is the difference between factors of a number and factors of a prime number?
Well, the factors of a prime number is that they only have two factors.
How many factors to each prime number have?
Prime numbers have as factors the number 1 and their own number. Example: 37 is a prime number because its only factors are "1" and "37". If the prime number had further factors, it would no longer be prime.
Prime numbers do not have any factors?
A prime number has two factors: one and the number itself. A prime number does not have any proper factors.
How are factors and prime numbers related?
Whether a number is a prime number or not is determined by its factors. It is a prime number if its only factors are 1 and itself.
How do you find the prime factors of a squared number?
The prime factors of a squared number are the prime factors, if any, of its square root.
