cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A112446 Pseudoprimes (base-2) equal to the product of 8 primes not necessarily distinct.

Original entry on oeis.org

38504389105, 79753114441, 86757431761, 95665544065, 101135235565, 160727267701, 184395152305, 232250619601, 241543943641, 267149008945, 281825521705, 298045705321, 306177962545, 360805362841, 432207073585, 435343749841, 473056144561, 503876371285, 518896999621
Offset: 1

Views

Author

Shyam Sunder Gupta, Dec 11 2005

Keywords

Examples

			a(1) = 38504389105 = 5*7*13*17*19*37*73*97.
		

Crossrefs

Intersection of A046310 and A001567.

Programs

  • Mathematica
    s={}; Do[If[PrimeOmega[n] == 8 && PowerMod[2, n - 1, n] == 1, AppendTo[s, n]], {n, 1, 10^11}]; s (* Amiram Eldar, Nov 10 2019 *)

Extensions

More terms from Amiram Eldar, Nov 10 2019