Compare 20 vs 43

Typecomposite numberprime
Unique factors21
Total factors31
Prime factorization22 × 51431
Prime factorization2 × 2 × 543
Divisors count62
Divisors1, 2, 4, 5, 10, 201, 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 numberalsXXXLIII
Base 21010021010112
Base 3202311213
Base 411042234
Base 54051335
Base 63261116
Base 7267617
Base 8248538
Base 9229479
Base 1020104310
Base 1119113a11
Base 1218123712
Base 1317133413
Base 1416143114
Base 1515152d15
Base 1614162b16
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