Prime numbers from 1 to 66

Here is the answer to questions like: Prime numbers from 1 to 66. Get all the prime numbers from one to 66. Use the Prime Numbers Before Calculator below to discover if any given number is prime or composite and get all the primes up to 66.

Prime Numbers Before Calculator

Enter a natural number to calculate the primes before it:
Ex.: 4, 11, 64, 128, ... until 10,000.

Prime Numbers Before 66:

The number 66 is not a prime number because it is possible to express it as a product of prime factors. In other words, 66 can be divided by 1, by itself and at least by 2, 3 and 11. So, 66 is a 'composite number'.

List of prime numbers before 66:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61.

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