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Asked: 2026-05-11T14:50:01+00:00

I need to calculate modulus with large number like : <?php $largenum = 95635000009453274121700;

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I need to calculate modulus with large number like :

<?php      $largenum = 95635000009453274121700;      echo $largenum % 97;  ?>

It’s not working… because $largenum is too big for an int in PHP.

Any idea how to do this ?

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1 Answer

  1. Use bcmod() from BCMath Arbitrary Precision Mathematics:

    $largenum = '95635000009453274121700'; echo bcmod($largenum, '97');

    Note, that $largenum is passed as a string, not converted to int.

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