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How do you know 43 is a prime number?

Updated: 4/28/2022
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14y ago

Best Answer

43 has only two factors : 1 and 43. Any number with only two factors, ie. 1 and itself, is a Prime number.

Factors are whole numbers which the original number is divisble by.

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14y ago
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Q: How do you know 43 is a prime number?
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