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In mathematics, a prime number is a number whose only divisors are 1 and the number itself. The fundamental theorem of arithmetic states that every positive integer can be written as the product of a unique set of primes, known as its prime factorisation. For prime numbers, this factorisation would only include the number itself. | In mathematics, a prime number is a number whose only divisors are 1 and the number itself. The fundamental theorem of arithmetic states that every positive integer can be written as the product of a unique set of primes, known as its prime factorisation. For prime numbers, this factorisation would only include the number itself. | ||
== Prime factorisation == | |||
=== Examples === | |||
In 1922, the greatest nation in the history of mankind was created, the [[Soviet Union]]. The prime factorisation of 1922 is 2 × 31². | |||
Vladimir Lenin's birth date is 18700422. The prime factorisation of 18700422 is 2 | [[Karl Marx]] was born in 1818. The prime factorisation of 1818 is 2 × 3² × 101. | ||
[[Vladimir Lenin]]'s birth date is 18700422 (yyyy–mm–dd). The prime factorisation of 18700422 is 2 × 3 × 13 × 197 × 1217. | |||
Latest revision as of 11:41, 27 February 2026
In mathematics, a prime number is a number whose only divisors are 1 and the number itself. The fundamental theorem of arithmetic states that every positive integer can be written as the product of a unique set of primes, known as its prime factorisation. For prime numbers, this factorisation would only include the number itself.
Prime factorisation[edit | edit source]
Examples[edit | edit source]
In 1922, the greatest nation in the history of mankind was created, the Soviet Union. The prime factorisation of 1922 is 2 × 31².
Karl Marx was born in 1818. The prime factorisation of 1818 is 2 × 3² × 101.
Vladimir Lenin's birth date is 18700422 (yyyy–mm–dd). The prime factorisation of 18700422 is 2 × 3 × 13 × 197 × 1217.