Primes that remain prime when a single digit 7 is inserted between any two consecutive digits or as the leading or trailing digit.

A215420

Primes that remain prime when a single digit 7 is inserted between any two consecutive digits or as the leading or trailing digit.

Terms

    a(0) =3a(1) =19a(2) =97a(3) =433a(4) =487a(5) =541a(6) =691a(7) =757a(8) =853a(9) =1471a(10) =2617a(11) =2953a(12) =4507a(13) =6481a(14) =7351a(15) =7417a(16) =8317a(17) =13177a(18) =31957a(19) =42457a(20) =46477a(21) =47977a(22) =50077a(23) =59053a(24) =71917a(25) =73897a(26) =74377a(27) =77479a(28) =77743a(29) =77761

External references