A070277 Smallest prime ending in n, or 0 if no such prime exists.

11, 2, 3, 0, 5, 0, 7, 0, 19, 0, 11, 0, 13, 0, 0, 0, 17, 0, 19, 0, 421, 0, 23, 0, 0, 0, 127, 0, 29, 0, 31, 0, 233, 0, 0, 0, 37, 0, 139, 0, 41, 0, 43, 0, 0, 0, 47, 0, 149, 0, 151, 0, 53, 0, 0, 0, 157, 0, 59, 0, 61, 0, 163, 0, 0, 0, 67, 0, 269, 0, 71, 0, 73, 0, 0, 0, 277, 0, 79, 0, 181, 0

Offset

1,1

Links

Antti Karttunen, Table of n, a(n) for n = 1..10000

Prog

(PARI) A070277(n) = if(!(n%2) || !(n%5), isprime(n)*n, my(k=10^#digits(n)); forprime(p=n, oo, if(0==((p-n)%k), return(p)))); \\ Antti Karttunen, Feb 06 2019

Crossrefs

Sequence in context: A322562 A040118 A099268 * A109864 A231433 A240454

Adjacent sequences: A070274 A070275 A070276 * A070278 A070279 A070280

Keyword

base,nonn

Author

Amarnath Murthy, May 07 2002

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Sep 26 2002

Status

approved