97973

Properties

Appears in sequences

• Primes of the form p^2 + 4, where p is prime.at n=19A045637
• Smallest prime of the form concatenation(s) of prime(n) with itself followed by a 3, or 0 if no such prime exists.at n=24A092993
• Primes q of the form q=p^2+4 (p=prime) such that r=q^2+4 is also prime.at n=5A165218
• List of primes of the form x^2+y^2 such that tau(x^2+y^2) = bigomega(x*y).at n=29A174024
• Values of q in A176983.at n=20A177831
• Primes formed by concatenating k, k and 3 for k >= 1.at n=23A210512
• Greatest n-digit prime in which every two-digit string is also a prime.at n=4A242377
• a(1) = 1, a(2) = 2, a(3) = 3 and a(n) is the smallest number not included earlier that divides the concatenation a(n-3), a(n-2), a(n-1).at n=41A351820
• Prime numbersat n=9417