Chen primes up to 74

Chen primes: A prime number p is called a Chen prime if p + 2 is either a prime or semiprime.

There is 18 chen primes smaller than 74.

Checkout chen primes up to: 100, 500, 1000, 10000.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 47, 53, 59, 67, 71

• Learn more about Chen primes.
• All chen primes