using Primes

parseInt() = parse.(Int64, readline()::String |> split)::Vector{Int64}
parseInt2() = parse.(Int64, readline()::String |> collect)::Vector{Int64}
parseInt3() = parse(Int64, readline()::String)::Int64

function main()
    println((parseInt3() |> factor |> length) ≤ 2 ? "Yes" : "No")
end

main()