The prime numbers between 20 and 30 are 23 and 29.
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. To find the prime numbers in this range, we can check each number from 21 to 29:
- 21: Not prime (divisible by 3 and 7)
- 22: Not prime (divisible by 2 and 11)
- 23: Prime (no divisors other than 1 and 23)
- 24: Not prime (divisible by 2, 3, 4, 6, 8, and 12)
- 25: Not prime (divisible by 5)
- 26: Not prime (divisible by 2 and 13)
- 27: Not prime (divisible by 3 and 9)
- 28: Not prime (divisible by 2, 4, 7, and 14)
- 29: Prime (no divisors other than 1 and 29)
Thus, within the range of 20 to 30, the only primes are 23 and 29.