Compare 18 vs 37

Typecomposite numberprime
Unique factors21
Total factors31
Prime factorization21 × 32371
Prime factorization2 × 3 × 337
Divisors count62
Divisors1, 2, 3, 6, 9, 181, 37
Number of properties018
Chen primes 12th
Cousin primes (1st member) 5th
Cuban primes 1 3rd
Emirps 4th
Good primes 5th
Isolated primes 3rd
Left-truncatable primes 8th
Lucky primes 5th
Pierpont primes 8th
Primes 12th
Prime triplets (1st member) 6th
Pythagorean primes 5th
Right-truncatable primes 8th
Sexy primes (1st member) 8th
Sexy primes (2nd member) 7th
Sexy prime triplets (2nd member) 5th
Solinas primes 11th
Two-sided primes 6th
Roman numberalsXVIIIXXXVII
Base 21001021001012
Base 3200311013
Base 410242114
Base 53351225
Base 63061016
Base 7247527
Base 8228458
Base 9209419
Base 1018103710
Base 1117113411
Base 1216123112
Base 1315132b13
Base 1414142914
Base 1513152715
Base 1612162516
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