The smallest positive square-free numbers are:1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 17, 19, 21, 22, 23, 26, 29, 30, 31, 33, 34, 35, 37, 38, 39, ...==Equivalent characterizations==The positive integer "n" is square-free if and only if in the prime factorization of "n", no prime number occurs more than once.
Vsega skupaj ima teserakt 8 kock, 24 kvadratov, 32 robov in 16 oglišč.