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PHP program to find the first natural number whose factorial can be divided by a number ‘x’
To find the first natural number whose factorial can be divided by a number ‘x’, the code is as follows −
Example
<?php
function factorial_num($x_val)
{
$i = 1;
$fact_num = 4;
for ($i = 1; $i < $x_val; $i++)
{
$fact_num = $fact_num * $i;
if ($fact_num % $x_val == 0)
break;
}
return $i;
}
$x_val = 16;
print_r("The first natural number whose factorial can be divided by 16 is ");
echo(factorial_num($x_val));
?>Output
The first natural number whose factorial can be divided by 16 is 4
A function named ‘factorial_num’ computes factorial of a number and checks to see if it is divisible by 16, and if yes, returns that number as output. Outside the function, a number is defined and it is passed as parameter to the function. Relevant output is displayed on the console.
Updated on: 02-Jul-2020
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