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PHP gmp_prob_prime() function

The PHP gmp_prob_prime() function checks the probability of the given input GMP number to being prime. This function determines if the given GMP number is a prime or not. This function is used for large and complicated numerical values.

Syntax

The given syntax shows the GMP function for identifying the probability of the prime number.

<?php
gmp_prob_prime($num_parameter);
?>

Parameters

As shown in the above GMP syntax, this function takes a GMP numerical value as a required parameter. The parameter is written as a $num_parameter.
The PHP version 5.6 and afterword versions use the gmp_prob_prime() function. we can use numeric data, or the string that can turn into a number.

Return Value

The function shows output in numerical format to give the possibility of the given number being a prime.
- The given input is not a prime number if the output shows the "0" value.
- If the output shows the "1" value, then the given input is probably (not fixed) a prime number.
- If the output shows the "2" value, then the given input is a prime number.

Examples

The given examples show the probability of the prime number of the various GMP parameters.

Example1: The given example finds the probability of prime number of the given positive input value.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_prob_prime() Function </h4>
<p> Display the probability of the prime number of the given input data </p>
<?php
$value1 = gmp_prob_prime("1111111111111111111");
$value2 = gmp_prob_prime("196");
$value3 = gmp_prob_prime("11");
echo "The probability of the prime number of a number: " .$value1;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value2;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value3;
?>
</body>
</html>

Output:

The following output identifies the probability of the prime number of the given value.

PHP gmp_prob_prime() function

Example2: The given example identifies probability of prime number of the negative input value.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_prob_prime() Function </h4>
<p> Display the probability of the prime number of the given input data </p>
<?php
$value1 = gmp_prob_prime("-11");
$value2 = gmp_prob_prime("-196");
echo "The probability of the prime number of a number: " .$value1;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value2;
?>
</body>
</html>

Output:

The following output identifies the probability of the prime number of the given value.

PHP gmp_prob_prime() function

Example3:

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_prob_prime() Function </h4>
<p> Display the probability of the prime number of the given input data </p>
<?php
$var1 = gmp_init("1111111111111111111");
$var2 = gmp_init("7");
$var3 = gmp_init("6");
$value1 = gmp_prob_prime($var1);
$value2 = gmp_prob_prime($var2);
$value3 = gmp_prob_prime($var3);
echo "The probability of the prime number of a number: " .$value1;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value2;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value3;
?>
</body>
</html>

Output:

The following output identifies the probability of the prime number of the given value.

PHP gmp_prob_prime() function

Example4: The given example identifies probability of prime number of the given GMP string value.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_prob_prime() Function </h4>
<p> Display the probability of the prime number of the given input data </p>
<?php
$var1 = gmp_init("1111111111111111111", 10);
$var2 = gmp_init("111", 10);
$var3 = gmp_init("11", 10);
$value1 = gmp_prob_prime($var1);
$value2 = gmp_prob_prime($var2);
$value3 = gmp_prob_prime($var3);
echo "The probability of the prime number of a number: " .$value1;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value2;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value3;
?>
</body>
</html>

Output:

The following output identifies the probability of the prime number of the given value.

PHP gmp_prob_prime() function

Example5: The given example shows probability of prime number of the given GMP binary value.

<!DOCTYPE html>
<html>
<body>
<h4> PHP gmp_prob_prime() Function </h4>
<p> Display the probability of the prime number of the given input data </p>
<?php
$var1 = gmp_init("1111111111111111111", 2);
$var2 = gmp_init("111", 2);
$var3 = gmp_init("1", 2);
$value1 = gmp_prob_prime($var1);
$value2 = gmp_prob_prime($var2);
$value3 = gmp_prob_prime($var3);
echo "The probability of the prime number of a number: " .$value1;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value2;
echo "<br/>";
echo "The probability of the prime number of the number: " .$value3;
?>
</body>
</html>

Output:

The following output identifies the probability of the prime number of the given value.

PHP gmp_prob_prime() function

Conclusion

The gmp_prob_prime() function shows whether the given number is prime or not with a probability of the prime number. It works on lengthy and complicated mathematical operations.

Next TopicPHP gmp_random_bits() function

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