52121

Properties

Appears in sequences

• Prime number spiral (clockwise, Northwest spoke).at n=36A053999
• Prime(p^2) where p = prime(n).at n=20A096327
• Primes formed by an m-digit prime concatenated with its last (m-1) digits, for m > 1.at n=24A252667
• One of the four successive approximations up to 5^n for the 5-adic integer 6^(1/4). This is the 1 (mod 5) case (except for n = 0).at n=7A325484
• a(n) = a(n-3) + a(n-2) + gcd(a(n-2), a(n-1)) with a(1) = a(2) = a(3) = 1.at n=36A370202
• Primes having only {1, 2, 5} as digits.at n=35A385773
• Prime numbersat n=5329