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Q: What is the sum of the first three prime numbers that end with a 9?

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83

19 + 29 + 59 = 107

You end it when all the numbers are prime.

Other than 2, no prime numbers are even. So prime numbers can't end in even numbers. After 5, no prime number can end in 5. After 5, all prime numbers end in 1, 3, 7 or 9.

Lots of prime numbers have zeros in them. 101, 103, 107 and 109 are all prime numbers. Prime numbers can't end in zero. Numbers that end in zero are multiples of ten and have too many factors to be prime numbers.

No. If they end in 4, they are even numbers and divisible by 2, and therefore are not prime.

After 5, all prime numbers end with 1, 3, 7 or 9.

2 and 5 are the only prime numbers that end in 2 or 5.

No.

There are an infinite amount of prime numbers, as numbers never end. Prime numbers are numbers that are only divisible by 1 and itself. For example, 2, 3, 5, 53, and 97 are prime numbers.

An infinite number of prime numbers contain one or more zeroes, though a prime number, always being odd, cannot end in a zero. The first four prime numbers containing zeroes are 101, 103, 107 and 109.

Two and five!

they end whith what

No.

5 and 2 are the only prime numbers that end in a 5 or 2. A prime number is by definition only divisible by 1 and itself, and all other whole numbers ending in 5 or 2 are divisible by 5 or 2, respectively. Numbers that are not whole numbers cannot be prime.

numbers are infinite. There is no end of numbers

no

No. Other than 5, no prime numbers end in 5.

No prime numbers end in 0. 130 is a composite.

All numbers larger than 5 which end in 5 are divisible by 5 and so are not prime. All numbers larger than 2 which end in 2 are divisible by 2 and so are not prime.

50 is greater than the seventh square, does not end in 5 and has two fives in its three number prime factorization.

567

They can end with 1, 2, 3, 7 or 9.

32 is not a prime because 2 is a factor of all even numbers. 95 is not a prime because all numbers greater than 5 that end in a 5 or 0 are composite numbers.

Two is the only prime number that ends in "2"