Gematria Calculation Result for us never found again in mmxiii on Roman Numeral

This is calculated by summing each letter's value: u(5) + s(0) + (0) + n(0) + e(0) + v(5) + e(0) + r(0) + (0) + f(0) + o(0) + u(5) + n(0) + d(500) + (0) + a(0) + g(0) + a(0) + i(1) + n(0) + (0) + i(1) + n(0) + (0) + m(1000) + m(1000) + x(10) + i(1) + i(1) + i(1).