61141

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 19.at n=23A031607
• Primes p such that p+1, p+2, p+3 and p+4 have equal number of divisors.at n=5A119728
• Number of zero-sum -n..n arrays of 5 elements with first and second differences also in -n..n.at n=14A201876
• Least prime factor of (2n+1)^(2n+1)+2.at n=32A228613
• Primes obtained by merging 5 successive digits in the decimal expansion of sqrt(2) + sqrt(3) + sqrt(5).at n=28A241221
• Primes having only {1, 4, 6} as digits.at n=27A260269
• Primes 8k + 5 at the end of the maximal gaps in A269513.at n=15A269515
• Primes k such that the concatenation of (b, k, b) and (k, b, k) are both prime, where b is the binary representation of k.at n=21A389801
• Prime numbersat n=6157