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21 has two prime factors.

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10y ago

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Related Questions

How many prime numbers are there from 21 to 35?

There are 3 prime numbers from 21 to 35:23, 29 and 31


How many two digit prime numbers are there?

There are 21 two-digit prime numbers.


How many different prime numbers are in the prime factorization of 21?

Two.


How many prime numbers are between 10 and 21?

Four. The prime numbers between 10 and 21 are 11, 13, 17, and 19.


What is the prime numbers of 21?

Do you mean, "What is the prime factorization of 21?"


Is 21 and 89 a pair of prime numbers?

21 is not prime.


How many different prime numbers are in 21?

There are two different numbers. 3 and 7


What numbers are prime numbers out of 21 31 41?

21


What are the prime numbers from 21 to 40?

The prime numbers from 21 to 40 are 23, 29, 31, and 37.


Is 7 and 3 and 21 prime numbers?

7 and 3 are prime numbers but 21 is a composite nuber


How many composite numbers are there from 101 to 200?

Out of those 100 numbers, 21 of them are prime numbers, so the remaining (100 - 21) = 79 are composite.


How many prime numbers between 1 and 8888888888888888888888888888888888888888888888?

To determine the number of prime numbers between 1 and 8888888888888888888888888888888888888888888888, we can use the Prime Number Theorem. This theorem states that the density of prime numbers around a large number n is approximately 1/ln(n). Therefore, the number of prime numbers between 1 and 8888888888888888888888888888888888888888888888 can be estimated by dividing ln(8888888888888888888888888888888888888888888888) by ln(2), which gives approximately 1.33 x 10^27 prime numbers.