Loren Booda Messages 3,115 Reaction score 4 Thread starter May 27, 2009 #1 "Of the numbers N>1, only 4 and 6 cannot be expressed as a sum of prime numbers with unique values."
JCVD Messages 73 Reaction score 0 May 27, 2009 #2 https://www.physicsforums.com/showthread.php?t=303457
Loren Booda Messages 3,115 Reaction score 4 May 27, 2009 #3 Thanks for the pointer, JCVD. Too simple to be undiscovered!