Here are the prime numbers between 10 and 30:
11, 13, 17, 19, 23, 29
Prime numbers are those numbers which cannot be divided to give an integer result except when divided by themselves or by 1.
Chat with our AI personalities
There are IO prime numbers between 10 and 30.
The number 10 is not prime. A prime number is divisble by itself and one, only. 10 is divisible by 1, by 2, and by 5. Thus, 10 is not a prime number.
no
11 13 17 19.
The prime number less than 10 that, when added to either 10 or 20, results in a prime number is 3. When you add 10 to 3, you get 13, which is a prime number. Similarly, when you add 20 to 3, you get 23, which is also a prime number.
There is no formula which will always calculate a prime number for you. However, there are schemes for finding all the primes. The oldest is called the Seive of Eratosthenes. To find all the prime numbers between 1 and 1000,, for example, you first go through the list crossing off every other number -- these will be all the even numbers. Then you go through the remaining list crossing off every third number. Next you go through the remaining list crossing off every 4th number. Next you go through the remaining list crossing off every n th number, where n starts at 5 and goes to 499. At that point, the numbers remaining on your list are all primes. For example to find the primes between 1 and 10: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10 1, 3, 5, 7, 9 1, 5, 7 These are the primes between 1 and 10.