Compare 640421 vs 640667

Property	640421	640667
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640421¹	640667¹
Prime factorization	640421	640667
Divisors count	2	2
Divisors	1, 640421	1, 640667
Number of properties	3	6
Additive primes	20365th	20371st
Chen primes		20395th
Cousin primes (2nd member)		5636th
Isolated primes	40838th
Primes	52109th	52125th
Prime triplets (2nd member)		2063rd
Twin primes (1st member)		5638th
Roman numberals
Base 2	10011100010110100101₂	10011100011010011011₂
Base 3	1012112111022₃	1012112211102₃
Base 4	2130112211₄	2130122123₄
Base 5	130443141₅	131000132₅
Base 6	21420525₆	21422015₆
Base 7	5305055₇	5305556₇
Base 8	2342645₈	2343233₈
Base 9	1175438₉	1175742₉
Base 10	640421₁₀	640667₁₀
Base 11	3a8181₁₁	3a8385₁₁
Base 12	26a745₁₂	26a90b₁₂
Base 13	195662₁₃	1957c1₁₃
Base 14	129565₁₄	12969d₁₄
Base 15	c9b4b₁₅	c9c62₁₅
Base 16	9c5a5₁₆	9c69b₁₆