What
is Prime number?
A prime number can be divided only by itself or
by 1 that number is called prime number.
For Example : The number 7 can be divided only
by 7 or by 1 that means we say that the number 7 is a prime member.
Noted
point: The number
0 and 1 are not considered prime numbers.
The live demo example link https://jsfiddle.net/xfpe35tb/
JavaScript
Program code
function isPrime(number) {
d = number - 1;
// If n is less than 2 or not
an integer then we can say not a prime number.
if (number < 2) {
alert('If n is less than 2 or not
an integer then we can say not a prime number.');
return false
}
if (number !=
Math.round(number)) {
alert('If n is less than 2 or not
an integer then we can say not a prime number.');
return false
}
while (d > 1) {
if ((number % d) == 0)
{
return false;
}
d--;
}
return true;
}
if (isPrime(1)) {
alert('Prime number');
}
else {
alert('Not Prime number');
}
//The Output/Result: if input
number is 1 or 0.
'If n is less than 2 or not
an integer then we can say not a prime number.
Other than 0 and 1 will
display is prime number or not prime number.