Compare 2 vs 43

Unique factors11
Total factors11
Prime factorization21431
Prime factorization243
Divisors count22
Divisors1, 21, 43
Number of properties2612
Additive primes1st9th
Bell primes1st 
Centered heptagonal primes 1st
Chen primes1st 
Class 1+ primes1st 
Cousin primes (1st member) 6th
Dihedral primes1st 
Euclid primes1st 
Factorial primes1st 
Fibonacci primes1st 
Isolated primes1st 
Kynea primes1st 
Left-truncatable primes1st9th
Lucas primes1st 
Lucky primes 6th
Mills primes1st 
Multiplicative primes1st 
Palindromic primes1st 
Pierpont primes1st 
Pierpont primes of the 2nd kind1st 
Prime triplets (2nd member) 7th
Prime triplets (3rd member) 6th
Quartan primes1st 
Restricted left-truncatable primes1st 
Right-truncatable primes1st 
Sexy primes (2nd member) 8th
Sexy prime triplets (3rd member) 5th
Sophie germain primes1st 
Thabit primes1st 
Twin primes (2nd member) 6th
Two-sided primes1st 
Ulam primes1st 
Wagstaff primes 3rd
Wedderburn-etherington primes1st 
Roman numberalsIIXLIII
Base 21021010112
Base 32311213
Base 4242234
Base 5251335
Base 6261116
Base 727617
Base 828538
Base 929479
Base 102104310
Base 112113a11
Base 122123712
Base 132133413
Base 142143114
Base 152152d15
Base 162162b16
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