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15 primes

Prime numbers 1 to 50

There are 15 prime numbers between 1 and 50. The first twelve are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, …. A prime is a positive integer greater than 1 with no divisors other than 1 and itself.

Complete list

2 · 3 · 5 · 7 · 11 · 13 · 17 · 19 · 23 · 29 · 31 · 37 · 41 · 43 · 47

Related prime lists

Frequently asked

How many prime numbers are there from 1 to 50?

There are 15 prime numbers between 1 and 50. The prime counting function π(50) = 15.

What is the largest prime up to 50?

The largest prime ≤ 50 is 47.

What is the smallest prime?

The smallest prime is 2. It's also the only even prime — every other even number is divisible by 2.

How do I test if a number is prime?

A number n is prime if it has no divisors other than 1 and itself. For small n, test divisibility by every prime up to √n. Numbers like 2, 3, 5, 7, 11, 13 are the standard test set for trial division up to 169.

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