Compare 2 vs 39

Unique factors12
Total factors12
Prime factorization2131 × 131
Prime factorization23 × 13
Divisors count24
Divisors1, 21, 3, 13, 39
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 
Quartan primes1st 
Restricted left-truncatable primes1st 
Right-truncatable primes1st 
Semiprimes 15th
Sophie germain primes1st 
Thabit primes1st 
Two-sided primes1st 
Ulam primes1st 
Wedderburn-etherington primes1st 
Roman numberalsIIXXXIX
Base 21021001112
Base 32311103
Base 4242134
Base 5251245
Base 6261036
Base 727547
Base 828478
Base 929439
Base 102103910
Base 112113611
Base 122123312
Base 132133013
Base 142142b14
Base 152152915
Base 162162716
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