MathML Fundamentals - Number mn

An mn element represents a "numeric literal" or other data that should be rendered as a numeric literal. Generally speaking, a numeric literal is a sequence of digits, perhaps including a decimal point, representing an unsigned integer or real number. MathML Fundamentals

34 + 102.56 + 666 + 34e-1

MathML

<math>
    <mn>34</mn>
    <mo>+</mo>
    <mn mathvariant="bold">102.56</mn>
    <mo>+</mo>
    <mn mathcolor="#ff0000">666</mn>
    <mo>+</mo>
    <mn>34e-1</mn>
</math>