1. Numbers
  2. Compare 4009 vs 4021

Compare 4009 vs 4021

Property40094021
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization191 × 211140211
Prime factorization19 × 2114021
Divisors count42
Divisors1, 19, 211, 40091, 4021
Number of properties16
Additive primes 285th
Harmonic primes 199th
Primes 556th
Pythagorean primes 272nd
Semiprimes1107th 
Sexy primes (1st member) 206th
Twin primes (2nd member) 105th
Roman numberalsMMMMIXMMMMXXI
Base 211111010100121111101101012
Base 3121111113121112213
Base 433222143323114
Base 511201451120415
Base 6303216303416
Base 7144557145037
Base 87651876658
Base 95444954579
Base 10400910402110
Base 11301511302611
Base 1223a11223b112
Base 131a95131aa413
Base 14166514167314
Base 1512c41512d115
Base 16fa916fb516
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