What is the prime factorisation of 1? (it does have one!)
After I made this video about 1 not being a prime, ( • The REAL reason 1 isn't prime ) I was asked a great question. If all positive integers have prime factorisations, but 1 isn't prime, what is the prime factorisation of 1? The answer? 1 is the product of NO primes!
Free Maths Challenge Courses for ages 7-18:
First Maths Challenge (ages 7-9): https://bit.ly/firstmaths
Primary Maths Challenge (ages 9-11): https://bit.ly/mapmc
Junior Maths Challenge (ages 11-13): https://bit.ly/ukmtjmc
Junior Kangaroo + Olympiad (ages 11-13): https://bit.ly/jkangjmo
Intermediate Maths Challenge (ages 13-16): https://bit.ly/ukmtimc
Intermediate Kangaroo (ages 13-16): https://bit.ly/intkangaroo
Intermediate Olympiad (ages 13-16): https://bit.ly/intolympiad
Senior Maths Challenge (ages 16-18): https://bit.ly/ukmtsmc
Senior Kangaroo (ages 16-18): https://bit.ly/seniorkangaroo
All courses: https://courses.mathsaurus.com/
