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Q: Is 43.2 a prime number

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Composite (the only even number that is prime is2).

343 and 432 are relatively prime to each other.

2 x 2 x 2 x 2 x 3 x 3 x 3 = 432

Composite

432 = 2, 3 522 = 2, 3, 29

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Composite (the only even number that is prime is2).

24*33

As 432 is even it can be divided by two thus it's a composite number

Since 432 is an even number greater than 2, 432 is not a prime number. The positive integer factors of 432 are: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 432

As even numbers, none of 138, 172 or 432 can be prime.As the sum of the digits of the number is equal to 9, 441 cannot be prime.

343 and 432 are relatively prime to each other.

If you want to know if a number is prime or composite, begin by looking at it. The last digit of 432 is even; that means that 432 is divisible by two, so it can't be prime. Look again. Add up the digits of 432. 4 + 3 + 2 = 9. 9 is divisible by 3, so 432 is divisible by 3. Not prime. In fact 432 is about as composite as you can get. It is 2 X 2 X 2 X 2 X 3 X 3 X 3.

2 x 2 x 2 x 2 x 3 x 3 x 3 = 432

24 x 33 = 432

The prime factors of 432 are 2, 2, 2, 2, 3, 3, and 3.

2^4 x 3^3 = 432, making it composite.

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