57221

Properties

Appears in sequences

• Primes of the form k^2 + k + 55661, with k >= 0.at n=29A116206
• Primes of the form p^2+100, where p is prime.at n=26A182476
• Approximation of the 2-adic integer exp(-4) up to 2^n.at n=16A321689
• Approximation of the 2-adic integer exp(-4) up to 2^n.at n=17A321689
• Bases b where exactly eight primes p with p < b exist such that p is a base-b Wieferich prime.at n=33A325884
• Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2.at n=7A380713
• Prime numbersat n=5803