Compare 640043 vs 640247

Property	640043	640247
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640043¹	640247¹
Prime factorization	640043	640247
Divisors count	2	2
Divisors	1, 640043	1, 640247
Number of properties	5	5
Additive primes	20353rd	20362nd
Chen primes		20388th
Cousin primes (2nd member)	5632nd
Isolated primes	40817th
Primes	52080th	52097th
Sexy primes (1st member)	11285th
Twin primes (1st member)		5635th
Ulam primes		3818th
Roman numberals
Base 2	10011100010000101011₂	10011100010011110111₂
Base 3	1012111222022₃	1012112020212₃
Base 4	2130100223₄	2130103313₄
Base 5	130440133₅	130441442₅
Base 6	21415055₆	21420035₆
Base 7	5304005₇	5304416₇
Base 8	2342053₈	2342367₈
Base 9	1174868₉	1175225₉
Base 10	640043₁₀	640247₁₀
Base 11	3a7968₁₁	3a8033₁₁
Base 12	26a48b₁₂	26a61b₁₂
Base 13	195431₁₃	19555a₁₃
Base 14	129375₁₄	12947d₁₄
Base 15	c9998₁₅	c9a82₁₅
Base 16	9c42b₁₆	9c4f7₁₆