Python sympy | sieve.extend() method

Python sympy | sieve.search() method

Last Updated : 27 Aug, 2019

With the help of sympy.sieve.search() method, we can find the indices i, j of the primes that bound a given number. If the given number is prime then i == j.

Syntax: sieve.search(n) Parameter: n - It denotes the number whose bounding prime indices is found. Returns: Returns a tuple containing the bounding prime indices of n.

Example #1:

Python3

# import sympy 
from sympy import sieve

# Use sieve.search() method 
i, j = sieve.search(23) 
    
print("The bounding prime indices of the number 23 : {}, {}".format(i, j))

Output:

The bounding prime indices of the number 23 : 9, 9

Example #2:

Python3

# import sympy 
from sympy import sieve

# Use sieve.search() method 
i, j = sieve.search(25) 
    
print("The bounding prime indices of the number 23 : {}, {}".format(i, j))

Output:

The bounding prime indices of the number 23 : 9, 10

Python sympy | sieve.extend() method

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