Q: Can you find any numbers that are divisible by four different prime numbers?

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85

It's impossible to find consecutive prime numbers after two because every other number after that is even and therefore divisible by two.

To find the first ten prime numbers, you can start with the number 2 and then iteratively check if each subsequent number is divisible by any of the prime numbers found so far. If a number is not divisible by any prime numbers, it is considered a prime number. Continue this process until you have found the first ten prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.

If the number is only divisible by 1 and itself, then that number is called prime number.E.g. 7 is only divisible by 1 and itself, i.e. 7. Hence, 7 is a prime number.

To find everything it's divisible by, you first need to find its prime factors. In this case, it's clearly divisible by 10, so the first two prime factors are 2 and 5. This leaves us with 89123, which is prime. To find all the numbers that 891230 divides by, we just need to combine these prime factors: 2x5 = 10 2x89123 = 178246 5x89123 = 445615 Thus 891230 is divisible by 1, 2, 5, 10, 89123, 178246, 445165 and 891230.

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85

Because the smallest such number is 210.

It's impossible to find consecutive prime numbers after two because every other number after that is even and therefore divisible by two.

To find the first ten prime numbers, you can start with the number 2 and then iteratively check if each subsequent number is divisible by any of the prime numbers found so far. If a number is not divisible by any prime numbers, it is considered a prime number. Continue this process until you have found the first ten prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.

You can check each individual number, whether it is a prime number. For numbers below 100, it is enough to check whether they are divisible by 2, by 3, by 5, and by 7. If a number is divisible by none of these, it is a prime number.

If the number is only divisible by 1 and itself, then that number is called prime number.E.g. 7 is only divisible by 1 and itself, i.e. 7. Hence, 7 is a prime number.

I suggest you try dividing it by different numbers, and see whether it is divisible. If you find a divisor, then it is composite. Otherwise it is a prime. For numbers up to 120, it is sufficient to test divisibility by 2, 3, 5, and 7.

A prime number is a number which is divisible by 1 and itself. The numbers from 1 to 10 which meet this criteria are 2, 3, 5, and 7

The four smallest prime numbers are 2, 3, 5, and 7. Their product is 2 x 3 x 5 x 7 = 210. Thus, the smallest number that is divisible by four different prime numbers is 210.

It is difficult to find even prime numbers because 2 is the only one. All the rest of the even numbers are divisible by 2, so they have at least one factor in addition to 1 and the number itself.

I only know two them they are, 1 and 2, but there is one more but you will have to find that out your self.

You could try dividing by composite numbers but the number that you are testing is divisible by a composite number, then it will be divisible by a prime factor of that composite number and that prime factor will be smaller. It is always easier to work with smaller numbers.