A062334 Primes starting and ending with 7.

7, 727, 757, 787, 797, 7027, 7057, 7127, 7177, 7187, 7207, 7237, 7247, 7297, 7307, 7417, 7457, 7477, 7487, 7507, 7517, 7537, 7547, 7577, 7607, 7687, 7717, 7727, 7757, 7817, 7867, 7877, 7907, 7927, 7937, 70067, 70117, 70157, 70177, 70207, 70237

Offset

0,1

Links

Harry J. Smith, Table of n, a(n) for n = 0..1000

Example

7687 is a member, as it is a prime and the first and the last digits are both 7.

Prog

(PARI) { default(primelimit, 800000); n=-1; t=log(10); forprime (p=2, 800000, if ((p-10*(p\10)) == 7 && (p\10^(log(p)\t)) == 7, write("b062334.txt", n++, " ", p); if (n==1000, break)) ) } \\ Harry J. Smith, Aug 05 2009

Crossrefs

Cf. A062332, A062333, A062335.

Sequence in context: A070746 A068004 A098110 * A222727 A201485 A083978

Adjacent sequences: A062331 A062332 A062333 * A062335 A062336 A062337

Keyword

nonn,base,easy

Author

Amarnath Murthy, Jun 21 2001

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Jun 29 2001

Status

approved