81551

Properties

Appears in sequences

• Primes p such that the differences between the 5 consecutive primes starting with p are (2,6,4,6).at n=16A078949
• Numbers k such that k and k^2 use only the digits 0, 1, 5, 6 and 8.at n=15A136870
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 8; primes in A146333.at n=30A146353
• Primes of the form T(k) + S(k) + 1 where T(k) is the k-th triangular number and S(k) is the k-th square number.at n=41A229080
• Primes p such that there are exactly p solutions to y^2 + x*y + y == x^3 + x^2 - 10*x - 10 (mod p).at n=45A275777
• Primes in A343531.at n=24A343532
• Prime numbers such that the product of their digits equals twice the number of their digits times the sum of their digits.at n=8A343701
• Primes having only {1, 5, 8} as digits.at n=30A385780
• Prime numbersat n=7976