26431

Properties

Appears in sequences

• Smallest prime factor in product of previous terms +1 or -1.at n=18A102926
• Primes congruent to 58 mod 59.at n=38A142785
• Triangle read by rows: T(n, k) = (5*n-5*k+1)*T(n-1, k-1) +(5*k-4)*T(n-1, k) + 5*T(n-2, k-1) with T(n, 1) = T(n, n) = 1.at n=22A144442
• Triangle read by rows: T(n, k) = (5*n-5*k+1)*T(n-1, k-1) +(5*k-4)*T(n-1, k) + 5*T(n-2, k-1) with T(n, 1) = T(n, n) = 1.at n=26A144442
• Primes p such that both 2p-1 and 2p^2-2p+1 are prime.at n=31A274609
• Numbers k such that (17*10^k + 43)/3 is prime.at n=19A294228
• Numbers k such that (2^ord(2, k) - 1)/k is prime, where ord(2, k) is the multiplicative order of 2 (mod k).at n=43A297362
• Prime numbersat n=2904