
import math
from collections.abc import Iterator
from itertools import takewhile



def        UpperCamelCase    (							lowerCAmelCase__		):
					'''simple docstring'''

					if 1 < number < 4:
										# 2 and 3 are primes
										return True
					elif number < 2 or number % 2 == 0 or number % 3 == 0:
										# Negatives, 0, 1, all even numbers, all multiples of 3 are not primes
										return False

					# All primes number are in format of 6k +/- 1
					for i in range(5 ,			int(math.sqrt(lowerCAmelCase__		) + 1		) ,			6		):
										if number % i == 0 or number % (i + 2) == 0:
															return False
					return True



def        UpperCamelCase    (							):
					'''simple docstring'''
					lowercase							=						2
					while True:
										if is_prime(lowerCAmelCase__		):
															yield num
										num += 1



def        UpperCamelCase    (							lowerCAmelCase__ = 200_0000		):
					'''simple docstring'''
					return sum(takewhile(lambda lowerCAmelCase__		: x < n ,			prime_generator()		)		)


if __name__ == "__main__":
							print(F'{solution() = }')






from __future__ import annotations

lowercase__		:Any   =    1.60_21E-19  # units = C



def        UpperCamelCase    (							lowerCAmelCase__ ,			lowerCAmelCase__ ,			lowerCAmelCase__ ,			):
					'''simple docstring'''
					if (conductivity, electron_conc, mobility).count(0		) != 1:
										raise ValueError('''You cannot supply more or less than 2 values'''		)
					elif conductivity < 0:
										raise ValueError('''Conductivity cannot be negative'''		)
					elif electron_conc < 0:
										raise ValueError('''Electron concentration cannot be negative'''		)
					elif mobility < 0:
										raise ValueError('''mobility cannot be negative'''		)
					elif conductivity == 0:
										return (
										    "conductivity",
										    mobility * electron_conc * ELECTRON_CHARGE,
										)
					elif electron_conc == 0:
										return (
										    "electron_conc",
										    conductivity / (mobility * ELECTRON_CHARGE),
										)
					else:
										return (
										    "mobility",
										    conductivity / (electron_conc * ELECTRON_CHARGE),
										)


if __name__ == "__main__":
							import doctest

							doctest.testmod()




