Compare 642406 vs 642407

Property	642406	642407
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	2¹ × 321203¹	642407¹
Prime factorization	2 × 321203	642407
Divisors count	4	2
Divisors	1, 2, 321203, 642406	1, 642407
Number of properties	1	6
Additive primes		20422nd
Chen primes		20437th
Cousin primes (2nd member)		5643rd
Isolated primes		40949th
Primes		52250th
Safe primes		3025th
Semiprimes	137642nd
Roman numberals
Base 2	10011100110101100110₂	10011100110101100111₂
Base 3	1012122012211₃	1012122012212₃
Base 4	2130311212₄	2130311213₄
Base 5	131024111₅	131024112₅
Base 6	21434034₆	21434035₆
Base 7	5313622₇	5313623₇
Base 8	2346546₈	2346547₈
Base 9	1178184₉	1178185₉
Base 10	642406₁₀	642407₁₀
Base 11	3a9716₁₁	3a9717₁₁
Base 12	26b91a₁₂	26b91b₁₂
Base 13	19652b₁₃	19652c₁₃
Base 14	12a182₁₄	12a183₁₄
Base 15	ca521₁₅	ca522₁₅
Base 16	9cd66₁₆	9cd67₁₆