78787

Properties

Appears in sequences

• Primes that contain digits 7 and 8 only.at n=6A020470
• Palindromic primes in which parity of digits alternates.at n=29A030150
• Lesser of two consecutive palindromes, both of which are prime.at n=19A032593
• Undulating primes (digits alternate).at n=44A032758
• Palindromic primes n such that the period of 1/n is a palindrome.at n=14A033938
• Smallest n-digit prime containing only the digits 7 and 8, or 0 if no such prime exists.at n=4A036949
• Undulating palindromic primes of form ABABAB...BA with alternating prime and nonprime digits.at n=12A039944
• Primes with consecutive digits that differ exactly by 1.at n=21A048398
• Palindromic primes of the form 'primemirp' resulting from A054217.at n=14A054218
• Palindromic primes with just two distinct digits.at n=33A056730
• Prime factors of numbers in A006521 (numbers k that divide 2^k + 1).at n=10A057719
• Strictly undulating primes (digits alternate and differ by 1).at n=11A059170
• Undulating palindromic primes: numbers that are prime, palindromic in base 10, and the digits alternate: ababab... with a != b.at n=20A059758
• Let p = abc..k be a prime in base 10. Define mirror(p) = abc...k...cba. Sequence gives primes of the form mirror(p) for some p.at n=19A068686
• Primes p such that the differences between the 5 consecutive primes starting with p are (4,6,6,6).at n=4A078957
• Palindromic primes with middle digit 7.at n=9A082443
• Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829.at n=29A083830
• Palindromes of the form 6n + 1 where n is also a palindrome. palindromes arising in A083835.at n=10A083836
• Palindromic primes with at least 3 digits in which the absolute difference of successive digits is identical.at n=23A085112
• Palindromes in A087386.at n=27A087387