55457

Properties

Appears in sequences

• Smallest number that requires n iterations of the unitary totient function (A047994) to reach 1.at n=27A003271
• Primes p of the form A152539(n) + 1.at n=38A152540
• Primes p such that 2^(p-1)+3 is prime.at n=13A153503
• Primes of the form 7n^2 + 10.at n=17A201610
• Primes having only {4, 5, 7} as digits.at n=24A217039
• In A217564, prime(i), where i is the index of the start of the first exactly-n terms between successive zeros.at n=11A217658
• a(n) is the least prime of the set of the smallest n consecutive primes a(n)=q_1(n), q_2(n),..., such that between (1/2)*q_i and (1/2)q_(i+1), i=1,...,n-1, there exists a prime, or a(n)=0 if no such set of primes exists.at n=10A217671
• a(n) is the least prime of the set of the smallest n consecutive primes a(n)=q_1(n), q_2(n),..., such that between (1/2)*q_i and (1/2)q_(i+1), i=1,...,n-1, there exists a prime, or a(n)=0 if no such set of primes exists.at n=11A217671
• Primes of the form k+(k+3)^2 where k is a nonnegative integer.at n=42A248697
• Primes of form n^2 + 28561.at n=23A256841
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 453", based on the 5-celled von Neumann neighborhood.at n=34A288367
• Primes of the form prime(n+2)*prime(n+1) - prime(n) +- 1.at n=31A294625
• Prime numbersat n=5630