Compare 640421 vs 640428

Property	640421	640428
Type	prime	composite number
Unique factors	1	4
Total factors	1	5
Prime factorization	640421¹	2² × 3¹ × 83¹ × 643¹
Prime factorization	640421	2 × 2 × 3 × 83 × 643
Divisors count	2	24
Divisors	1, 640421	1, 2, 3, 4, 6, 12, 83, 166, 249, 332, 498, 643, 996, 1286, 1929, 2572, 3858, 7716, 53369, 106738, 160107, 213476, 320214, 640428
Number of properties	3	0
Additive primes	20365th
Isolated primes	40838th
Primes	52109th
Roman numberals
Base 2	10011100010110100101₂	10011100010110101100₂
Base 3	1012112111022₃	1012112111120₃
Base 4	2130112211₄	2130112230₄
Base 5	130443141₅	130443203₅
Base 6	21420525₆	21420540₆
Base 7	5305055₇	5305065₇
Base 8	2342645₈	2342654₈
Base 9	1175438₉	1175446₉
Base 10	640421₁₀	640428₁₀
Base 11	3a8181₁₁	3a8188₁₁
Base 12	26a745₁₂	26a750₁₂
Base 13	195662₁₃	195669₁₃
Base 14	129565₁₄	12956c₁₄
Base 15	c9b4b₁₅	c9b53₁₅
Base 16	9c5a5₁₆	9c5ac₁₆