[](https://pepy.tech/project/find-primes)
Find Primes is a library to find all kinds of primes and factors of big numbers.
**Install**
Stable Version:
shell
pip install -U find-primes
Beta Version:
shell
pip install --pre -U find-primes
**Find all primes below a number**
Example: Find all primes below 100.
python
from find_primes import all_primes
print(all_primes(100, 'list'))
**Check if a number is a prime**
Example: Check if 189765 is a prime.
python
from find_primes import is_prime
print(is_prime(189765))
**Factor a big number**
Example: Factor 2776889953055853600532696901.
python
from find_primes import factor_mpqs
print(factor_mpqs(2776889953055853600532696901))
**The CLI Tool**
Usage:
shell
find_primes.py --help
**[Twin Primes](https://en.wikipedia.org/wiki/Twin_prime)**
A twin prime is a prime number that is either 2 less or 2 more than another prime number.
Example: Find all twin primes below 1000.
python
from find_primes import find_twins
print(find_twins(1000))
**[Palindrome Primes](https://en.wikipedia.org/wiki/Palindromic_prime)**
A palindrome prime is a prime number that is also a palindrome number.
Example: Find all palindrome primes below 1000.
python
from find_primes import find_palindromes
print(find_palindromes(1000))
Example: Find all palindrome primes below 1000 in base 2.
python
from find_primes import find_palindromes_base_2
print(find_palindromes(8200)) return in base 10
**[Emirps](https://en.wikipedia.org/wiki/Emirp)**
An emirp is a prime number that results in a different prime when its decimal digits are reversed.
Example: Find all emirps below 1000.
python
from find_primes import find_reverses
print(find_reverses(1000))
**[Primes in Arithmetic Progression](https://en.wikipedia.org/wiki/Primes_in_arithmetic_progression)**
Primes in arithmetic progression are any sequence of at least three prime numbers that are consecutive terms in an arithmetic progression.
Example: Find all primes in arithmetic progression below 1000.
python
from find_primes import find_arithmetic_prime_progressions
print(find_arithmetic_prime_progressions(100))
**[Mersenne Primes](https://en.wikipedia.org/wiki/Mersenne_prime)**
A mersenne prime is a prime number that is one less than a power of two.
Example: Find all mersenne primes below 600000.
python
from find_primes import find_mersenne
print(find_mersenne(600000))
**[Double Mersenne Primes](https://en.wikipedia.org/wiki/Double_Mersenne_number#Double_Mersenne_primes)**
A double mersenne prime is a double mersenne number that is prime.
Example: Find all double mersenne primes below 130.
python
from find_primes import find_double_mersennes
print(find_double_mersennes(130))
**[Fermat Pseudoprimes](https://en.wikipedia.org/wiki/Fermat_pseudoprime)**
A fermat pseudoprime is a pseudoprime that satisfies fermat's little theorem.
Example: Find all fermat pseudoprimes below 1000.
python
from find_primes import find_fermat_pseudoprimes
print(find_fermat_pseudoprimes(1000))
**[Balence Primes](https://en.wikipedia.org/wiki/Balanced_prime)**
A balence prime is a prime number which is equal to the arithmetic mean of the nearest primes above and below.
Example: Find all balence primes below 1000.
python
from find_primes import find_balences
print(find_balences(1000))
**[Carol Primes](https://en.wikipedia.org/wiki/Carol_number#Primes_and_modular_relations)**
A carol prime is a carol number that is prime.
Example: Find all carol primes below 4000.
python
from find_primes import find_carols
print(find_carols(4000))
**[Fibonacci Primes](https://en.wikipedia.org/wiki/Fibonacci_prime)**
A fibonacci prime is a fibonacci number that is prime.
Example: Find all fibonacci primes below 1000.
python
from find_primes import find_fibonaccis
print(find_fibonaccis(1000))
**[Truncatable Primes](https://en.wikipedia.org/wiki/Truncatable_prime)**
A left-truncatable prime is a prime number which remains prime when the leading digit is successively removed.
Example: Find all left-truncatable primes below 140.
python
from find_primes import find_truncates
print(find_truncates(140, LEFT))
A right-truncatable prime is a prime number which remains prime when the last digit is successively removed.
Example: Find all right-truncatable primes below 295.
python
from find_primes import find_truncates
print(find_truncates(295, RIGHT))
A left-and-right-truncatable prime is a prime number which remains prime when the leading and last digits are simultaneously successively removed.
Example: Find all left-and-right-truncatable primes below 3800.
python
from find_primes import find_truncates
print(find_truncates(3800, BOTH))
**[Cuban Primes](https://en.wikipedia.org/wiki/Cuban_prime)**
A cuban prime is a prime number that is a solution to a specific equation involving third powers of x and y.
Example: Find all cuban primes below 440.
python
from find_primes import find_cubans
print(find_cubans(440))
**[Center Polygonal Primes](https://en.wikipedia.org/wiki/Centered_polygonal_number)**
A centered triangular prime is a prime number and a centered figurate number that represents a triangle with a dot in the center and all other dots surrounding the center in successive triangular layers.
Example: Find all centered triangular primes below 1000.
python
from find_primes import find_center_polygons
print(find_center_polygons(1000, TRIANGLE))
A centered square prime is a prime number and a centered figurate number that represents a square with a dot in the center and all other dots surrounding the center in successive square layers.
Example: Find all centered square primes below 1000.
python
from find_primes import find_center_polygons
print(find_center_polygons(1000, SQUARE))
A centered pentagonal prime is a prime number and a centered figurate number that represents a pentagon with a dot in the center and all other dots surrounding the center in successive pentagonal layers.
Example: Find all centered pentagonal primes below 1000.
python
from find_primes import find_center_polygons
print(find_center_polygons(1000, PENTAGON))
A centered hexagonal prime is a prime number and a centered figurate number that represents a hexagon with a dot in the center and all other dots surrounding the center in successive hexagonal layers.
Example: Find all centered hexagonal primes below 1000.
python
from find_primes import find_center_polygons
print(find_center_polygons(1000, HEXAGON))
A centered heptagonal number is a prime number and a centered figurate number that represents a heptagon with a dot in the center and all other dots surrounding the center in successive heptagonal layers.
Example: Find all centered heptagon primes below 1000.
python
from find_primes import find_center_polygons
print(find_center_polygons(1000, HEPTAGON))
**[Wieferich Primes](https://en.wikipedia.org/wiki/Wieferich_prime)**
A wieferich prime is a prime p that <img src="https://latex.vimsky.com/test.image.latex.php?fmt=png&val=%255Cdpi%257B150%257D%2520%255Clarge%2520p%2520%255E%257B2%257D&dl=0" width = "13.5" height = "15"> divides <img src="https://latex.vimsky.com/test.image.latex.php?fmt=png&val=%255Cdpi%257B150%257D%2520%255Clarge%25202%255E%257Bp-1%257D-1&dl=0" height = "15">.
Example: Find all wieferich primes below 4000.
python
from find_primes import find_wieferiches
print(find_wieferiches(3515))
**[Wilson Primes](https://en.wikipedia.org/wiki/Wilson_prime)**
A wilson prime is a prime p that <img src="https://latex.vimsky.com/test.image.latex.php?fmt=png&val=%255Cdpi%257B150%257D%2520%255Clarge%2520p%2520%255E%257B2%257D&dl=0" width = "13.5" height = "15"> divides <img src="https://latex.vimsky.com/test.image.latex.php?fmt=png&val=%255Cdpi%257B150%257D%2520%255Clarge%2520%2528p-1%2529%2521%26plus%3B1&dl=0" width = "80" height = "15">.
Example: Find all wilson primes below 565.
python
from find_primes import find_wilsons
print(find_wilsons(565))
**[Happy Primes](https://en.wikipedia.org/wiki/Happy_number#Happy_primes)**
A happy prime is a prime that is a happy number.
Example: Find all happy primes in base 10 below 195.
python
from find_primes import find_happys
print(find_happys(195))
**[Pierpont Primes](https://en.wikipedia.org/wiki/Pierpont_prime)**
A Pierpont prime is a prime of the form <img src="https://latex.vimsky.com/test.image.latex.php?fmt=png&val=%255Cdpi%257B150%257D%2520%255Clarge%25202%257B%255Eu%257D%255Ccdot3%257B%255Ev%257D%26plus%3B1&dl=0" width = "80" height = "15">.
Example: Find all pierpont primes below 770.
python
from find_primes import find_pierponts
print(find_pierponts(770))
**[Leyland Primes](https://en.wikipedia.org/wiki/Leyland_number#Leyland_primes)**
A leyland prime is a leyland number that is a prime.
Example: Find all leyland primes below 33000.
python
from find_primes import find_leylands
print(find_leylands(33000))
**[Leyland Primes of a Second Kind](https://en.wikipedia.org/wiki/Leyland_number#Leyland_number_of_the_second_kind)**
A leyland prime of a second kind is a leyland number of a second kind that is a prime.
Example: Find all leyland primes of a second kind below 58050.
python
from find_primes import find_leylands_second_kind
print(find_leylands_second_kind(58050))
**[Woodall Primes](https://en.wikipedia.org/wiki/Woodall_number#Woodall_primes)**
A woodall prime is a woodall number that is a prime.
Example: Find all woodall primes below 400.
python
from find_primes import find_woodalls
print(find_woodalls(400))
**[Unique Primes](https://en.wikipedia.org/wiki/Unique_prime_number)**
A unique prime is a prime that there is no other prime q such that the period length of the decimal expansion of its reciprocal, 1 / p, is equal to the period length of the reciprocal of q, 1 / q.
Example: Find all unique primes below 105.
python
from find_primes import find_uniques
print(find_uniques(105))
**[Friedman Primes](https://en.wikipedia.org/wiki/Friedman_number)**
A friedman prime is a friedman number that is a prime.
Example: Find all friedman primes below 128.
python
from find_primes import find_friedmans
print(find_friedmans(128))
**[MPQS Method](https://www.rieselprime.de/ziki/Multiple_polynomial_quadratic_sieve)**
The Multiple Polynomial Quadratic Sieve (MPQS) method is a factorization method.
Example: Factor a big number.
python
from find_primes import factor_mpqs
print(factor_mpqs(277688995305593400532696901))
**[SIQS Method](https://www.rieselprime.de/ziki/Self-initializing_quadratic_sieve)**
The Self-initializing Quadratic Sieve (SIQS) method is a factorization method based on the Multiple Polynomial Quadratic Sieve (MPQS) method.
Example: Factor a big number.
python
from find_primes import factor_siqs
print(factor_siqs(3458280484189))
**[Lenstra Elliptic-curve Method](https://en.wikipedia.org/wiki/Lenstra_elliptic-curve_factorization)**
The Lenstra Elliptic-curve method is a factorization method.
Example: Factor a big number.
python
from find_primes import factor_lenstra
print(factor_lenstra(2854159729781))
**[Pollard p - 1 Method](https://en.wikipedia.org/wiki/Pollard%27s_p_%E2%88%92_1_algorithm)**
The Pollard p - 1 method is a factorization method.
Example: Factor a big number.
python
from find_primes import factor_pollardpm1
print(factor_pollardpm1(2854159729781))
**[Williams p + 1 Method](https://en.wikipedia.org/wiki/Williams%27s_p_%2B_1_algorithm)**
The Williams p + 1 Method is a factorization method.
Example: Factor a big number.
python
from find_primes import factor_williamspp1
print(factor_williamspp1(2854159729781))