81001

Properties

Appears in sequences

• Primes having only {0, 1, 8} as digits.at n=17A061247
• Square-loop primes.at n=13A108660
• Antidiagonal sums of triangle A118180: a(n) = Sum_{k=0..[n/2]} (3^k)^(n-2*k) for n>=0.at n=9A118182
• Primes of the form 1000*k + 1.at n=17A156655
• Primes of the form (p^2 - 1)/8 - p, where p is also a prime.at n=29A165567
• Prime numbers of the form n*b^n + 1, where b, n >= 2.at n=36A178541
• Primes consisting of all of the cube digits (i.e., 0, 1 and 8) at least once.at n=7A180685
• Primes of the form 3n^3+1.at n=6A201112
• Primes of the form 10n^2 + 1.at n=25A201709
• Number of (n+2) X 8 0..1 matrices with each 3 X 3 subblock idempotent.at n=18A224557
• Centered 25-gonal primes.at n=19A276264
• a(n) = a(n-1)*3^n + 1 where a(0)=1.at n=4A371441
• Prime numbersat n=7926