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Earn +20 ptsQ: Is any number ending in 7 a prime number?
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Is the number of days in a week composite or prime?
The number of days in a week, which is 7, is a prime number. A prime number is a number greater than 1 that can only be divided by 1 and itself without leaving a remainder. In the case of 7, it cannot be divided evenly by any other number except 1 and 7, making it a prime number.
Is the number 7 a prime number?
yes 7 is a prime number
Is 511 a prime number?
No; it isn't. 511/7 = 73. A prime number is any number that is only divisible by itself and the number 1.
Is 21 a prime number?
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, & 21No. 21=3*7
Is 7 prime or composite?
7 is a prime number because it is only divisible by 1 and 7.
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