28219

Properties

Appears in sequences

• Primes of form k^2 - 5.at n=32A028877
• Class 7- primes.at n=10A081426
• Primes of the form 3*m^2 - 8.at n=18A201781
• Primes of the form 9n^2 - 5.at n=10A201960
• Primes p such that (p+nextprime(p))/2 is a perfect square.at n=24A225195
• Lesser of consecutive primes whose average is a perfect power.at n=27A242380
• Largest prime factor of the largest squarefree practical number comprising n prime factors.at n=4A267422
• Primes p that remain prime through 3 iterations of function f(x) = 6x - 1.at n=28A289109
• Integers k such that the sum of the first k noncubes is a square.at n=11A373767
• Prime numbersat n=3076