Silver nanoparticles, method for producing same, silver nanoparticle dispersion liquid, and base provided with silver material

The present invention provides: silver nanoparticles which have excellent dispersion stability in a solvent and are capable of forming a silver material such as a silver film or a silver wire having excellent conductivity and adhesion on a base even by short-time heating at low temperatures; a method for producing the silver nanoparticles; a silver nanoparticle dispersion liquid; and a base which is provided with a silver material using the silver nanoparticle dispersion liquid. Silver nanoparticles of the present invention contain, at a specific ratio, (A) a silver compound represented by formula (1), (B) an amine compound having a primary amine, and (C) a polymer that is obtained by polymerizing a monomer composition containing (c1) a urethane bond-containing diol (meth)acrylate compound represented by formula (2) and (c2) at least one monomer that is selected from among (meth)acrylic acid ester monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers and epoxy group-containing monomers. (In formula (2), R1 represents a hydrogen atom or a methyl group; R2 represents -(CH2)n-; and n represents a number of 1-4).