117511

Properties

Appears in sequences

• n sets a record for the number of primes in {n, f(n), f(f(n)), ..., 1}, where f is the Collatz function defined by f(x) = x/2 if x is even; f(x) = 3x + 1 if x is odd.at n=17A078373
• Irregular primes the indices of whose indices are irregular primes of order two.at n=8A090887
• Prime numbers p of the form 10k+1 for which the quintic polynomial x^5-x-1 modulus p is factorizable into five binomials.at n=22A135842
• Primes of the form abcdabcd..abcdab.at n=12A187114
• Prime numbersat n=11088