77527

Properties

Appears in sequences

• Larger of emirps (pairs) with only prime digits (A128388).at n=17A133753
• Emirps with a prime number of only prime digits.at n=28A137833
• Larger of emirps (pairs) with a prime number of only prime digits.at n=13A137835
• Triangle read by rows, T(n,k) = (2^k-1) * T(n-1,k) + T(n-1,k-1).at n=32A139382
• Triangle T(n,k,2) read by rows (generalized q-Stirling numbers of second kind): T(n, k, q_) = (1/(q - 1)^k)*Sum[(-1)^(k - j)*q*Binomial[k + n, k -j] - Binomial[j + n, j, q - 1], {j, 0, k}], with q=2, where Binomial[,] is the Gaussian q-binomial coefficient as in A022166.at n=18A156823
• Integers N such that the digits of N occur starting at the N-th place in N^N.at n=7A159003
• Primes that contain only the digits (2, 5, 7).at n=38A214705
• Sum of the prime parts in the partitions of n into 8 parts.at n=42A309469
• Expansion of Product_{i>=1, j>=1} (1 + x^(i*j)) * (1 + x^(2*i*j)).at n=26A329467
• Primes p such that q1=6*p-1 and q2=6*p+1 are also primes (twin primes) and q1 is a Sophie Germain prime (i.e., 2*q1+1 is prime).at n=41A358381
• Prime numbersat n=7617