A095936 One- or two-digit primes encountered in the decimal expansion of e.

71, 59, 23, 53, 2, 47, 71, 13, 97, 47, 59, 67, 7, 3, 53, 47, 59, 71, 13, 17, 19, 3, 5, 59, 17, 41, 13, 59, 29, 43, 29, 3, 29, 5, 59, 7, 73, 13, 23, 79, 43, 7, 23, 29, 7, 53, 31, 19, 19, 11, 73, 83, 41, 79, 7, 2, 89, 41, 67, 47, 61, 47, 41, 11, 53, 37, 23, 43, 37, 71, 7, 53, 7, 17, 2

Offset

1,1

Links

Table of n, a(n) for n=1..75.

Prog

(PARI) digitepr(n, d) = { default(realprecision, 1000); e=Str(exp(1)*10^999); default(realprecision, 28); for(x=1, n, y=eval(mid(e, x, d)); if(isprime(y), print1(y", "))) } \ Get a substring of length n from string str starting at position s in str. mid(str, s, n) = { local(v, ln, x, tmp); v =""; tmp = Vec(str); ln=length(tmp); for(x=s, s+n-1, v=concat(v, tmp[x]); ); return(v) }

Crossrefs

Sequence in context: A033391 A122967 A087075 * A104843 A322831 A127316

Adjacent sequences: A095933 A095934 A095935 * A095937 A095938 A095939

Keyword

base,nonn

Author

Cino Hilliard, Jul 13 2004

Status

approved