19037

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 71.at n=13A020410
• Primes that remain prime through 3 iterations of function f(x) = 6x + 7.at n=13A023289
• Primes of the form k^2 - 7.at n=14A028883
• Numbers whose base-5 representation contains exactly three 1's and three 2's.at n=31A045232
• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 23.at n=27A051964
• Prime number spiral (clockwise, Southwest spoke).at n=23A054568
• Prime(n) and prime(n+3) use the same digits.at n=22A069795
• Primes of the form pq - 6, where p and q are consecutive primes.at n=15A099775
• Primes congruent to 39 mod 59.at n=36A142766
• Primes congruent to 5 mod 61.at n=37A142803
• Primes of the form A037074(k) - 6, where A037074(k) is a twin prime product.at n=5A162834
• Cyclops emirps.at n=30A183057
• Number of (n+1) X 8 binary arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.at n=10A186460
• Primes p such that (p+nextprime(p))/2 is a perfect square.at n=20A225195
• Cyclops numbers whose squares are cyclops numbers.at n=36A239827
• Lesser of consecutive primes whose average is a perfect power.at n=22A242380
• Primes of the form k*(k+2)/3 - 3, k>2.at n=27A262203
• Expansion of Product_{k>=2} (1 + x^Fibonacci(k))^Fibonacci(k).at n=32A291650
• Primes p of the form 8*k + 5 such that every odd prime divisor of p-1 has the form 8*t + 7.at n=38A306932
• Position of the first occurrence of n in A337474.at n=32A337476