Python | sympy.is_prime() method Last Updated : 08 Feb, 2023 Summarize Comments Improve Suggest changes Share Like Article Like Report In the sympy module, we can test whether a given number n is prime or not using sympy.is_prime() function. For n < 2^64 the answer is definitive; larger n values have a small probability of actually being pseudoprimes. Note that Negative numbers (e.g. -13) are not considered prime numbers. Syntax: sympy.is_prime() Parameter: n; number to be tested Return: bool value result Code #1: Python3 # Python program to check prime number # using sympy.is_prime() method # importing sympy module from sympy import * # calling isprime function on different numbers geek1 = simplify(30).is_prime geek2 = simplify(13).is_prime print(geek1) print(geek2) Output: False True Code #2: Python3 # Python program to check prime number # using sympy.is_prime() method # importing sympy module from sympy import * # calling isprime function on different numbers geek1 = simplify(2).is_prime geek2 = simplify(-2).is_prime print(geek1) print(geek2) Output: True False Comment More infoAdvertise with us Next Article Python | sympy.primepi() method S Shivam_k Follow Improve Article Tags : Python SymPy Practice Tags : python Similar Reads Python | sympy.prime() method With the help of sympy.prime() method, we can find the nth prime, with the primes indexed as prime(1) = 2, prime(2) = 3, etc. Syntax: prime(n) Parameter: n - It denotes the nth prime number. Returns: Returns the nth prime number. Example #1: Python3 # import sympy from sympy import prime n = 5 # Use 1 min read Python | sympy.primepi() method With the help of sympy.primepi() method, we can find the number of prime numbers less than or equal to a given number. Syntax: primepi(n) Parameter: n - It denotes the number up to which the count of prime number is calculated. Returns: Returns the number of prime numbers less than or equal to n. Ex 1 min read Python | sympy.primenu() method With the help of sympy.primenu() method, we can calculate the number of distinct prime factors for a given positive integer. Syntax: primenu(n) Parameter: n - It denotes an integer. Returns: Returns the number of distinct prime factors for the given positive integer. Example #1: Python3 # import pri 1 min read Python | sympy.is_number method With the help of sympy.is_number method, we can check if element is number or not and it will return a boolean value if number is found by using sympy.is_number method. Syntax : sympy.is_number Return : Return a boolean value if number is found. Example #1 : In this example we can see that by using 1 min read Python | sympy.primeomega() method With the help of sympy.primeomega() method, we can calculate the number of prime factors counting multiplicities for a given positive integer. For example, primeomega(12) = 3, since 12 = 22 * 31. Therefore, number of prime factors = sum of multiplicities of prime factors, 2 + 1 = 3. Syntax: primeome 1 min read Python | simpy.nextprime() method In the sympy module, we can get the next prime number for a given number n using sympy.nextprime() function. For n < 2^64 the answer is definitive; larger n values have a small probability of actually being pseudoprimes. Syntax: sympy.nextprime() Parameter: n; number to be tested Return: next pri 1 min read Like