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

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

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Example

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

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 *)

Crossrefs

Intersection of A046310 and A001567.

Sequence in context: A038821 A139780 A234072 * A295460 A306430 A216018

Adjacent sequences: A112443 A112444 A112445 * A112447 A112448 A112449

Keyword

easy,nonn

Author

Shyam Sunder Gupta, Dec 11 2005

Extensions

More terms from Amiram Eldar, Nov 10 2019

Status

approved