74747

Properties

Appears in sequences

• Number of ordered quadruples of integers from [ 2,n ] with no global factor.at n=35A015638
• Primes that contain digits 4 and 7 only.at n=6A020465
• Palindromic primes in which parity of digits alternates.at n=27A030150
• Undulating primes (digits alternate).at n=43A032758
• Palindromic primes n such that the period of 1/n is a palindrome.at n=12A033938
• Palindromic and prime Fibonacci-lucky numbers.at n=35A039679
• Undulating palindromic primes of form ABABAB...BA with alternating prime and nonprime digits.at n=11A039944
• Primes with consecutive digits that differ exactly by 3.at n=8A048400
• Palindromic primes whose sum of squared digits is also prime.at n=25A052035
• Palindromic primes with just two distinct digits.at n=27A056730
• Smallest sets of 3 consecutive palindromic primes (palprimes) in arithmetic progression. The first prime of each set is listed.at n=2A059120
• Undulating palindromic primes: numbers that are prime, palindromic in base 10, and the digits alternate: ababab... with a != b.at n=19A059758
• Palindromic primes with middle digit 7.at n=8A082443
• Palindromic primes p with property that another palindromic prime with as many digits can be obtained by using all the digits of p with a different frequency >=1 (every digit is used at least once).at n=30A082807
• Palindromic primes with at least 3 digits in which the absolute difference of successive digits is identical.at n=22A085112
• Palindromes in A087386.at n=25A087387
• Palindromic primes that yield a prime when sandwiched between two 7's. (Prefixing and suffixing a 'seven' on both sides yields another pal prime).at n=15A088271
• Let f(n) be the n-th palindrome in A089743. Then a(n) is the smallest palindromic prime that begins with f(n).at n=34A088277
• Palindromic primes using at most two distinct digits.at n=32A088562
• Prime worms [successive digit differences with absolute value of 3].at n=1A089315