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Q: Which natural number have 2 factors?

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prime number

A prime number has exactly two factors: itself and 1.

4? the factors of 4 are 1,4 and 2

Answer16 is the smallest natural number that has exactly five factors; which are: 1, 2, 4, 8, and 16. Only squares have an odd number of factors.

It is 2^6 = 64.

No. The definition of a composite number is a natural number that isn't prime (or 1). The definition of a prime number is one with only 2 factors (itself and 1).

1, 2, 4, 11, 22, 44

a composite number

2*3*5 = 30

The only factors of 2 are 1 and 2. The factors of a prime number are 1 and the number itself.

A natural number that is NOT a perfect square has an even number of factors. 10=1x10 2x5 four 36=1x36 2x18 3x12 4x9 6

4 its factors are 2 and 2

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