440056

Appears in sequences

• Numbers k such that k concatenated with k-6 gives the product of two numbers which differ by 5.at n=17A116118
• Numbers k such that k concatenated with k-2 gives the product of two numbers which differ by 3.at n=12A116143
• Numbers k such that k concatenated with itself gives the product of two numbers which differ by 1.at n=7A116154
• Numbers k for which 16*k+1, 16*k+3, 16*k+7, 16*k+13 and 16*k+15 are primes.at n=26A123990