A117324 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A117324

Prime(10^n) modulo semiprime(10^n).

0

2, 3, 227, 729, 22965, 380555, 156346, 10920166, 202913258, 2973399074, 39284376410, 489544827463, 5874954672992

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

LINKS

Table of n, a(n) for n=0..12.

FORMULA

a(n) = A000040(10^n) modulo A001358(10^n). a(n) = A117322(10^n). a(n) = A006988(n) modulo A114125(n).

EXAMPLE

prime(10^0) modulo semiprime(10^0) = 2 mod 4 = 2.

prime(10^1) modulo semiprime(10^1) = 29 mod 26 = 3.

prime(10^2) modulo semiprime(10^2) = 541 mod 314 = 227.

CROSSREFS

Sequence in context: A321225 A037275 A142960 * A355962 A037059 A302398

Adjacent sequences: A117321 A117322 A117323 * A117325 A117326 A117327

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post, Mar 08 2006

EXTENSIONS

a(12) from Zak Seidov

STATUS

approved