# Prime numbers + natural numbers - math problems

#### Number of problems found: 141

- Prime factors

Factor the number 6600 into the product of prime numbers. - 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. - Primes 2

Which prime numbers is number 2025 divisible? - Prime factors

Write 98 as a product of prime factors - Prime divisors

Find 2/3 of the sum's ratio and the product of all prime divisors of the number 120. - Count of roots

How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers? - 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? - Divisible by nine

How many three-digit natural numbers in total are divisible without a remainder by the number 9? - Twenty-five

How many are three-digit natural numbers divisible by 25? - Rectangles

How many rectangles with area 8713 cm^{2}whose sides are natural numbers are? - Year 2018

The product of the three positive numbers is 2018. What are the numbers? - Lcm of three numbers

What is the Lcm of 120 15 and 5 - Reminder and quotient

There are given the number C = 281, D = 201. Find the highest natural number S so that the C:S, D:S are with the remainder of 1, - Lcm 2

Create the smallest possible number that is divisible by numbers 5,8,9,4,3 - MO C–I–1 2018

An unknown number is divisible by just four numbers from the set {6, 15, 20, 21, 70}. Determine which ones. - Common divisors

Find all common divisors of numbers 30 and 45. - Z7-I-4 stars 4949

Write instead of stars digits so the next write of product of the two numbers to be valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗ - There

There are two numbers on the screen - one in the blue and the other in the red box. In the beginning, both numbers are the same. With each beep, both numbers increase - by 1 in the blue field and by 3 in the red field. At one point, the number 49 appears - John Smith

John Smith is reading a 435-page novel. If he reads the same number of pages per day and the number is a prime number greater than 10, how many pages per day will he read? - Numbers

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

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Prime numbers - math problems. Natural numbers - math problems.