# Chebyshev formula

To estimate the number of primes less than x is used Chebyshev formula:

Estimate the number of primes less than 30300537.

$\mathrm{\Pi}(x)=1.11{\displaystyle \frac{x}{ln\text{}x}}$

Estimate the number of primes less than 30300537.

**Correct result:****Showing 0 comments:**

#### You need to know the following knowledge to solve this word math problem:

## Next similar math problems:

- Primes 2

Which prime numbers is number 2025 divisible? - Unknown number

Unknown number is divisible by exactly three different primes. When we compare these primes in ascending order, the following applies: • Difference first and second prime number is half the difference between the third and second prime numbers. • The prod - Sum of two primes

Christian Goldbach, a mathematician, found out that every even number greater than 2 can be expressed as a sum of two prime numbers. Write or express 2018 as a sum of two prime numbers. - Infinite decimal

Imagine the infinite decimal number 0.99999999 .. ... ... ... That is a decimal and her endless serie of nines. Determine how much this number is less than the number 1. Thank you in advance. - Divisors

The sum of all divisors unknown odd number is 2112. Determine sum of all divisors of number which is twice of unknown numbers. - Numbers

Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum? - Six-digit primes

Find all six-digit prime numbers that contain each one of digits 1,2,4,5,7 and 8 just once. How many are they? - School

Less than 500 pupils attend school. When it is sorted into pairs, one pupil remains. Similarly, when sorted into 3, 4, 5 and 6 members team one remains. Sorted to seven members teams, no left behind. How many pupils are attending this school? - Four-digit number

Find also a four-digit number, which quadrupled written backwards is the same number. - Two-digit number

I am a two-digit number less than 20. When I divided by three, then you get the rest 1 and when you divide me by four you get also rest 1. What number am I? - Prime number

Jan wrote any number from 1 to 20. What is the probability that he wrote the prime number? - Meadow

On the meadow grazing horses, cows and sheep, together less than 200. If cows were 45 times more, horses 60 times more and sheep 35 times more than there are now, their numbers would equall. How many horses, cows and sheep are on the meadow together? - School year

At the beginning of the school year, 396 notebooks and 252 textbooks are ready to be distributed in the classroom. All pupils receive the same number of notebooks and the same amount of textbooks. How many pupils are there in the class if you know that th - Unknown number 7

16% of the unknown number is by 21 less than unknown number itself. Determine the natural unknown number. - A large

A large gear will be used to turn a smaller gear. The large gear will make 75 revolutions per minute. The smaller gear must make 384 revolutions per minute. Find the smallest number of teeth each gear could have. [Hint: Use either GCF or LCM. ] - Big number

hat is the remainder when dividing number 10 to 47 - 111 by number 9? - Number

What number should be placed instead of the asterisk in number 702*8 to get a number divisible by 6?