Numbers for which Euler’s totient function equals 13!
Problem 248
Published on Saturday, 6th June 2009, 01:00 am; Solved by 731The first number n for which φ(n)=13! is 6227180929.
Find the 150,000th such number.
The first number n for which φ(n)=13! is 6227180929.
Find the 150,000th such number.