Python | sympy.prevprime() method

Python | sympy.is_prime() method

Last Updated : 08 Feb, 2023

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

Python | sympy.prevprime() method

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Shivam_k

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Article Tags :

Python
SymPy

Practice Tags :

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