primes1

checks a large number of usual and unusual cases in regards to having a prime as a superscript. NOTE: some tests may not make sense mathematically.

W3C sample	WIRIS
	$x^2+2^2+x^{\prime }+x^{\text{'}}+x^{\text{'}\text{'}}+x\prime +{x^{\text{'}}}^{\text{'}}+{x^{\text{'}}}^2+x^{\text{'}+\text{'}}+{x^{\text{'}}}^{\text{'}}+x^{{\text{'}}^{\text{'}}}+{\text{'}}^{\text{'}}+{\text{'}}^{\text{'}}$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <msup>
    <mi>x</mi>
    <mn>2</mn>
  </msup>
  <mo>+</mo>
  <msup>
    <mn>2</mn>
    <mn>2</mn>
  </msup>
  <mo>+</mo>
  <msup>
    <mi>x</mi>
    <mo> &#x02032;</mo>
  </msup>
  <mo>+</mo>
  <msup>
    <mi>x</mi>
    <mo>'</mo>
  </msup>
  <mo>+</mo>
  <msup>
    <mi>x</mi>
    <mo>''</mo>
  </msup>
  <mo>+</mo>
  <mi>x</mi>
  <mi>&#x02032;</mi>
  <mo>+</mo>
  <msup>
    <msup>
      <mi>x</mi>
      <mo>'</mo>
    </msup>
    <mo>'</mo>
  </msup>
  <mo>+</mo>
  <msup>
    <msup>
      <mi>x</mi>
      <mo>'</mo>
    </msup>
    <mn>2</mn>
  </msup>
  <mo>+</mo>
  <msup>
    <mi>x</mi>
    <mrow>
      <mo>'</mo>
      <mo>+</mo>
      <mo>'</mo>
    </mrow>
  </msup>
  <mo>+</mo>
  <msup>
    <msup>
      <mi>x</mi>
      <mo>'</mo>
    </msup>
    <mo>'</mo>
  </msup>
  <mo>+</mo>
  <msup>
    <mi>x</mi>
    <msup>
      <mo>'</mo>
      <mo>'</mo>
    </msup>
  </msup>
  <mo>+</mo>
  <msup>
    <mo>'</mo>
    <mo>'</mo>
  </msup>
  <mo>+</mo>
  <msup>
    <mo>'</mo>
    <mo>'</mo>
  </msup>
</math>

Author: Dave Doyle, Design Science