Compare 18 vs 43

Typecomposite numberprime
Unique factors21
Total factors31
Prime factorization21 × 32431
Prime factorization2 × 3 × 343
Divisors count62
Divisors1, 2, 3, 6, 9, 181, 43
Number of properties012
Additive primes 9th
Centered heptagonal primes 1st
Cousin primes (1st member) 6th
Left-truncatable primes 9th
Lucky primes 6th
Primes 14th
Prime triplets (2nd member) 7th
Prime triplets (3rd member) 6th
Sexy primes (2nd member) 8th
Sexy prime triplets (3rd member) 5th
Twin primes (2nd member) 6th
Wagstaff primes 3rd
Roman numberalsXVIIIXLIII
Base 21001021010112
Base 3200311213
Base 410242234
Base 53351335
Base 63061116
Base 7247617
Base 8228538
Base 9209479
Base 1018104310
Base 1117113a11
Base 1216123712
Base 1315133413
Base 1414143114
Base 1513152d15
Base 1612162b16
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