10 lines
245 B
JavaScript
10 lines
245 B
JavaScript
Number.prototype.isPrime = function() {
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let i = 2, num = this;
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if (num == 0 || num == 1) return false;
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if (num == 2) return true;
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while (i <= Math.ceil(Math.sqrt(num))) {
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if (num % i == 0) return false;
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i++;
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}
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return true;
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}
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