1. Numbers
  2. Compare 2 vs 9

Compare 2 vs 9

Property29
Typeprimesemiprime
Unique factors11
Total factors12
Prime factorization2132
Prime factorization23 × 3
Divisors count23
Divisors1, 21, 3, 9
Number of properties261
Additive primes1st 
Bell primes1st 
Chen primes1st 
Class 1+ primes1st 
Dihedral primes1st 
Euclid primes1st 
Factorial primes1st 
Fibonacci primes1st 
Isolated primes1st 
Kynea primes1st 
Left-truncatable primes1st 
Lucas primes1st 
Mills primes1st 
Multiplicative primes1st 
Palindromic primes1st 
Pierpont primes1st 
Pierpont primes of the 2nd kind1st 
Primes1st 
Quartan primes1st 
Restricted left-truncatable primes1st 
Right-truncatable primes1st 
Semiprimes 3rd
Sophie germain primes1st 
Thabit primes1st 
Two-sided primes1st 
Ulam primes1st 
Wedderburn-etherington primes1st 
Roman numberalsIIIX
Base 210210012
Base 3231003
Base 424214
Base 525145
Base 626136
Base 727127
Base 828118
Base 929109
Base 10210910
Base 11211911
Base 12212912
Base 13213913
Base 14214914
Base 15215915
Base 16216916
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