80989

Properties

Appears in sequences

• Primes having only {0, 6, 8, 9} as digits.at n=34A053580
• Number of 2-trees rooted at a triangle with two similar edges.at n=16A063692
• Primes p such that phi(p+1) = phi(p-1).at n=10A067890
• a(0)=1, a(1)=1, a(n) = 13*a(n/2) for n=2,4,6,..., a(n) = 12*a((n-1)/2) + a((n+1)/2) for n=3,5,7,....at n=29A116524
• Row sums of triangle A141210.at n=13A141211
• Numbers k such that sum of digits of k = sum of digits of anti-divisors of k.at n=32A213239
• Primes p such that p^2*q^2*r^2 + 12 and p^2*q^2*r^2 - 12 are primes where q and r are next two primes after p.at n=26A240725
• Primes having only {0, 8, 9} as digits.at n=7A385772
• Primes having only {0, 2, 8, 9} as digits.at n=38A386055
• Primes having only {0, 5, 8, 9} as digits.at n=33A386081
• Prime numbersat n=7925