Tuesday, April 14, 2020
Wednesday, April 01, 2020
If 1 is included as a prime, then all prime numbers can be expressed as a sum using only the prime numbers appearing previously on the number line (using each number only once, no multiplicity). For example, 11 can be expressed as 7+3+1. This is true for every prime number, as long as 1 is included as a prime.