1) Which positive integers have exactly four positive divisors? 2) Let n be a positive integer. Show that
Follow Math Help Forum on Facebook and Google+
Originally Posted by Janu42 1) Which positive integers have exactly four positive divisors? 2) Let n be a positive integer. Show that 1) Integers of the form or . Because for . 2) Haven't solved, except that it's obviously true for n prime.
For 2, note that if then
View Tag Cloud