Favrion@lemmy.world to math@lemmy.worldEnglish · 1 year agoIs there a name for numbers whose factors only consist of prime numbers but are not prime in themselves?message-squaremessage-square3fedilinkarrow-up15arrow-down11file-text
arrow-up14arrow-down1message-squareIs there a name for numbers whose factors only consist of prime numbers but are not prime in themselves?Favrion@lemmy.world to math@lemmy.worldEnglish · 1 year agomessage-square3fedilinkfile-text
minus-squarepalebluethought@lemmy.worldlinkfedilinkEnglisharrow-up3·1 year agoThis would be true if and only if the number has exactly 2 prime factors. Otherwise, if n = abc, then a*b (or any other choice of two) is also a factor, and is not prime.
This would be true if and only if the number has exactly 2 prime factors. Otherwise, if n = abc, then a*b (or any other choice of two) is also a factor, and is not prime.