1777771

Properties

Appears in sequences

• Palindromic primes using only two distinct digits and only the exterior digit is different.at n=26A056728
• Primes which are a sandwich of numbers using at most one digit between two 1's.at n=12A068685
• Palindromic primes with middle digit 7.at n=27A082443
• Smallest palindromic prime containing exactly n 7's.at n=4A083978
• Palindromic primes in which all internal digits are 7.at n=1A108844
• a(n) = n 7's sandwiched between two 1's.at n=5A205087
• Primes of the form XYYYYYX, where Y is a single digit.at n=2A214291
• Smaller of two consecutive palindromic primes with equal digital sum.at n=13A230220
• Prime numbersat n=133508