Python | sympy.compositepi() method

With the help of sympy.compositepi() method, we can find the number of composite numbers less than or equal to a given number.

Syntax: compositepi(n)

Parameter:
n – It denotes the number up to which the count of composite number is calculated.

Returns: Returns the number of composite numbers less than or equal to n.

Example #1:

# import compositepi() method from sympy
from sympy import compositepi

n = 10

# Use compositepi() method
count_composites = compositepi(n)

print("The number of composites numbers less than or equal to {} is {}".format(n, count_composites))

Output:

The number of composites numbers less than or equal to 10 is 5

Example #2:

# import compositepi() method from sympy
from sympy import compositepi

n = 100

# Use compositepi() method
count_composites = compositepi(n)

print("The number of composites numbers less than or equal to {} is {}".format(n, count_composites))

Output:

The number of composites numbers less than or equal to 100 is 74