Not true, 1 was considered prime quite recently https://blogs.scientificamerican.com/roots-of-unity/why-isnt-1-a-prime-number/ https://blogs.scientificamerica

Not true, 1 was considered prime quite recently https://blogs.scientificamerican.com/roots-of-unity/why-isnt-1-a-prime-number/ https://blogs.scientificamerican.com/roots-of-unity/why-isnt...