prime numbers

Only self-divisible integers

Prime numbers are whole numbers greater than one that can only be divided evenly by themselves and one.

The sequence begins 2, 3, 5, 7, 11, 13 and continues infinitely.

Prime numbers are fundamental in mathematics and cryptography because every whole number can be expressed as a unique product of primes.

The encryption relies on multiplying two very large prime numbers together.

Related

cryptography · secret codes · summation · mathematics · factors · divisors · Eratosthenes · eleven · lucky numbers · divisible · Euclid · quantum computing · conjecture · theorem · sieve · twin · infinite · three

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Opposites
divisibility structure

prime numberscomposite numbers

Integers with smaller divisors

composites · products · perfect squares · square numbers

Family

number, prime, primary, primitive, primes, prime number

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Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G