473280

Appears in sequences

• Least k such that the least factor of k^Phi(k) -1 is the n-th prime.at n=13A066732
• a(n) = (prime(n)^5 - prime(n))/3.at n=6A138425
• Positive integers n such that n^2 = (x^4 - y^4)*(z^4 - t^4) where x>y and z>t are distinct pairs of integers with gcd(x,y)=gcd(z,t)=1.at n=24A147856