Compare 3 vs 49

Property349
Typeprimesemiprime
Unique factors11
Total factors12
Prime factorization3172
Prime factorization37 × 7
Divisors count23
Divisors1, 31, 7, 49
Number of properties291
Additive primes2nd 
Chen primes2nd 
Class 1+ primes2nd 
Cousin primes (1st member)1st 
Cullen primes1st 
Euclid primes2nd 
Factorial primes2nd 
Fermat primes1st 
Fibonacci primes2nd 
Left-truncatable primes2nd 
Leyland primes1st 
Lucas primes2nd 
Lucky primes1st 
Mersenne primes1st 
Multiplicative primes2nd 
Palindromic primes2nd 
Pierpont primes2nd 
Pierpont primes of the 2nd kind2nd 
Primes2nd 
Proth primes1st 
Right-truncatable primes2nd 
Semiprimes 17th
Solinas primes1st 
Sophie germain primes2nd 
Super primes1st 
Twin primes (1st member)1st 
Two-sided primes2nd 
Ulam primes2nd 
Wagstaff primes1st 
Wedderburn-etherington primes2nd 
Roman numberalsIIIXLIX
Base 21121100012
Base 310312113
Base 4343014
Base 5351445
Base 6361216
Base 7371007
Base 838618
Base 939549
Base 103104910
Base 113114511
Base 123124112
Base 133133a13
Base 143143714
Base 153153415
Base 163163116
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