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Is 21 a prime number

Updated: 4/28/2022
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Cassie88

Lvl 1
11y ago

Best Answer

A Prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.

No, 21 is not a prime number.

21 is divisible by 1, 3, 7, & 21


No. 21=3*7
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Wiki User

11y ago
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Umer Khan

Lvl 1
2y ago
No
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Anonymous

Lvl 1
4y ago

Is 21 a prime or composite

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Anonymous

Lvl 1
3y ago

No

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Anonymous

Lvl 1
3y ago

no

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Q: Is 21 a prime number
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