All the other even numbers can be divided by 2, so no other even numbers are prime. 3 is the next prime number. Work out all the multiples of 3, (6, 9, 12, 15 etc) and forget about these.

There are 25 prime numbers between 1 and 100. A prime number is a whole number greater than 1 that has only two divisors: 1 and itself. The prime numbers between 1 and 100 are 2, 3, 5, 7, 11, 13 ...

Therefore, 29 is a prime number. Prime Numbers 1 to 100. Prime Numbers from 1 to 10: 2, 3, 5, 7: Prime Numbers from 11 to 20: 11, 13, 17, 19: Prime Numbers from 21 to 30: 23, 29: ...

The factors of a prime number are the number itself and 1. 19 is a prime number. It can only be divided by 1 and 19 without any remainders. The only factors of 19 are 1 and 19.

A major milestone was reached in 2005, when Goldston and two colleagues showed that there is an infinite number of prime pairs that differ by no more than 16 (ref. 1). But there was a catch.

Prime numbers are essential to modern life because they underpin all of encryption. What is written makes no sense, but there may be good ideas, buried in it, for future discussion.

CERTAIN quadratic series abound in prime numbers 1. Take, for example, the following Sequence in which the consecutive differences are 2, 4, 6, 8, etc. These are all prime numbers; the next term ...

Prime numbers are quite extraordinary. They're like "special snowflakes" - unique in the way that they don't have any other positive divisors other than the number 1 and the prime number itself.

Borel asked Dyson to name a prime number and, unlike Grothendieck, Dyson provided a number that is only divisible by 1 and itself: 2 31 – 1. But that reply did not satisfy Borel.