149837

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 26.at n=31A031614
• Primes p such that 30*p-1, 30*p+1 and 36*p-1, 36*p+1 are twin primes.at n=12A138696
• a(n) is the minimal prime of the form 4k+1 for which s=A008784(n) is the minimal positive integer such that s*a(n)-floor(sqrt(s*a(n)))^2 is a square.at n=27A145215
• Primes p such that (p-1)/2 and (p+1)/2 have same sum of divisors.at n=5A171720
• Prime numbersat n=13834