A234925 Primes which become squares when the digits are rotated once to the right.

61, 211, 613, 619, 691, 2251, 3643, 3691, 3967, 4099, 4441, 4813, 7213, 8443, 12049, 16843, 21001, 24169, 27691, 30259, 32251, 39241, 39847, 41611, 42499, 46411, 48649, 50767, 61291, 63841, 67219, 69001, 72493, 79561, 79699, 84163, 84961, 87691, 88093, 96001

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Example

The prime 3691 is in the list because 1369 = 37*37.

Prog

(PARI) rotr(a) = if(a<10, a, eval(Str(a%10, a\10)))
s=[]; forprime(n=2, 200000, if(issquare(rotr(n)), s=concat(s, n))); s

Crossrefs

Cf. A234926.

Sequence in context: A245865 A357780 A259410 * A171585 A038643 A273364

Adjacent sequences: A234922 A234923 A234924 * A234926 A234927 A234928

Keyword

nonn,base

Author

Colin Barker, Jan 01 2014

Status

approved