71429

Properties

Appears in sequences

• Primes p such that the decimal expansion of p remains prime under two iterations of base-10 to base-2 conversions.at n=20A123266
• Primes p1 such that p1^3+p2^2=pp are average of twin primes. p1 and p2 consecutive primes, p1 < p2.at n=40A138735
• Engel expansion of the Glaisher-Kinkelin constant A074962.at n=9A279627
• a(1) = 1; a(n+1) = Sum_{d|n} phi(d) * a(d) * a(n/d).at n=9A341639
• Prime numbersat n=7075