A076979 Deleting exactly one digit yields a prime.

12, 13, 15, 17, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 42, 43, 45, 47, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 62, 63, 65, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 82, 83, 85, 87, 92, 93, 95, 97, 101, 102, 103, 105

Offset

1,1

Links

Andrew Howroyd, Table of n, a(n) for n = 1..10000

Prog

(PARI) isok(n)={my(b=1); while(b<=n && !isprime(n%b + n\b\10*b), b*=10); b<=n} \\ Andrew Howroyd, Dec 10 2024

Crossrefs

Cf. A034895.

Sequence in context: A136200 A096514 A074163 * A365589 A085520 A085556

Adjacent sequences: A076976 A076977 A076978 * A076980 A076981 A076982

Keyword

base,easy,nonn

Author

Amarnath Murthy, Oct 23 2002

Status

approved