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All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this.

Example: 210

210 Divide by two.

105,2 Divide by three.

35,3,2 Divide by five.

7,5,3,2 Stop. All the factors are prime.

2 x 3 x 5 x 7 = 210

That's the prime factorization of 210.

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9y ago
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6y ago

A prime factor is a Prime number that has only two factors which are itself and one as for example 5 is a prime number because its only factors are 5 and 1.

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Q: What is the meaning of prime factor?
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