3865157

Properties

Appears in sequences

• Primes of form 4*p^2 + 1, p prime.at n=27A052292
• Primes p of the form 4*n^2 + 1 such that 4*p^2+1 is also prime.at n=22A121834
• Primes of the form 81n^2 - 90n + 26.at n=22A144571
• a(n) = 6561*n^2 - 9558*n + 3482.at n=25A156773
• a(n) = 531441*n^2 - 322218*n + 48842.at n=2A157670
• Divisorial primes: primes p of the form p = 1 + Product_{d|k} d for some k.at n=29A258455
• Divisorial primes p of the form p = 1 + k^2 where k^2 = Product_{d|k} d= A007955(k) for some k.at n=27A258896
• Prime numbersat n=274312