A277206 Primes that become palindromic primes when the least significant digit is deleted.

23, 29, 31, 37, 53, 59, 71, 73, 79, 113, 1013, 1019, 1319, 1511, 1811, 1913, 3137, 3533, 3539, 3733, 3739, 3833, 7573, 7577, 7873, 7877, 7879, 9199, 9293, 105019, 106013, 106019, 113111, 113117, 114113, 124213, 127217, 127219, 128213, 133319, 138311, 138319

Offset

1,1

Comments

113 is the only term in the sequence with an odd number of digits.

Links

Chai Wah Wu, Table of n, a(n) for n = 1..10000 a(n) for n = 1..500 from Colin Barker.

Prog

(PARI) revint(n) = m=n%10; n\=10; while(n>0, m=m*10+n%10; n\=10); m
L=List(); forprime(n=2, 100000, r=n\10; if(isprime(r) && revint(r)==r, listput(L, n))); Vec(L)

Crossrefs

Cf. A234912, A235000, A277689.

Sequence in context: A227919 A240898 A244077 * A214754 A344375 A153631

Adjacent sequences: A277203 A277204 A277205 * A277207 A277208 A277209

Keyword

nonn,base

Author

Colin Barker, Apr 11 2017

Status

approved