Compare 640009 vs 640061

Property	640009	640061
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640009¹	640061¹
Prime factorization	640009	640061
Divisors count	2	2
Divisors	1, 640009	1, 640061
Number of properties	6	4
Additive primes	20351st	20355th
Chen primes	20378th	20380th
Happy primes	7413th
Isolated primes		40819th
Lucky primes	5978th
Primes	52076th	52082nd
Twin primes (2nd member)	5632nd
Roman numberals
Base 2	10011100010000001001₂	10011100010000111101₂
Base 3	1012111221001₃	1012111222222₃
Base 4	2130100021₄	2130100331₄
Base 5	130440014₅	130440221₅
Base 6	21415001₆	21415125₆
Base 7	5303626₇	5304032₇
Base 8	2342011₈	2342075₈
Base 9	1174831₉	1174888₉
Base 10	640009₁₀	640061₁₀
Base 11	3a7937₁₁	3a7984₁₁
Base 12	26a461₁₂	26a4a5₁₂
Base 13	195406₁₃	195446₁₃
Base 14	12934d₁₄	129389₁₄
Base 15	c9974₁₅	c99ab₁₅
Base 16	9c409₁₆	9c43d₁₆