Prime numbers + divisibility - math problems
Number of problems found: 130
- Primes 2
Which prime numbers is number 2025 divisible?
Make decomposition using prime numbers of number 155. Result write as prime factors (all, even multiple)
- Prime divisors
Find 2/3 of the ratio of the sum and the product of all prime divisors of the number 120.
- Prime factors
Write 98 as product of prime factors
- Prime number
Jan wrote any number from 1 to 20. What is the probability that he wrote the prime number?
- 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?
- Year 2018
The product of the three positive numbers is 2018. What are the numbers?
- Amazing number
An amazing number is name for such even number, the decomposition product of prime numbers has exactly three not necessarily different factors and the sum of all its divisors is equal to twice that number. Find all amazing numbers.
- 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
- Common divisors
Find all common divisors of numbers 30 and 45.
Determine the smallest integer which divided 11 gives remainder 4 when divided 15 gives remainder 10 and when divided by 19 gives remainder 16.
Write smallest three-digit number, which in division 5 and 7 gives the rest 2.
How many three-digit natural numbers are divisible by 25?
- Lcm 2
Create the smallest possible number that is divisible by numbers 5,8,9,4,3
- Count of roots
How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
- Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9?
- LCM of two number
Find the smallest multiple of 63 and 147
- Diofant 2
Is equation ? solvable on the set of integers Z?
- No. of divisors
How many different divisors have number ??
How many rectangles with area 8713 cm2 whose sides are natural numbers are?
Prime numbers - math word problems. Divisibility - math word problems.