4 ms·

Counterexample: 6.

• Dylan16807 13y ago
  Okay off-by-one, greater than 7. But more fun is 'every even number 10 and up is the sum of at most four primes, at least one of them being 3.
  • Zenst 13y ago
    Hmm, this is also very very true, Curse you the Number TWO being a prime and not poor Number ONE. The madness :0. So maybe (5x2)+1 onwards, though wondering that any two primes +2 will alwys mess that one up. Still all that said nothing about the said even number not being also able to be made up by three primes without adding +1 ;). But still Wondering now how many clash's and with that it does get down to the case of: Any Two primes + 2 would be three prime numbers and also a even number, we all know that too be true and fact, even if those primes are also the value of 2. Numbers are such fun, more so when you question them, learn them and respect, or indeed change them. They are still fun.
• Zenst 13y ago
  Yes 6 is already three primes: 2+2+2 Well pointed out. So from 7 onwards then :blush:-)