Compare 639949 vs 640043

Property	639949	640043
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	639949¹	640043¹
Prime factorization	639949	640043
Divisors count	2	2
Divisors	1, 639949	1, 640043
Number of properties	3	5
Additive primes		20353rd
Cousin primes (2nd member)		5632nd
Isolated primes	40810th	40817th
Primes	52071st	52080th
Sexy primes (1st member)		11285th
Ulam primes	3816th
Roman numberals
Base 2	10011100001111001101₂	10011100010000101011₂
Base 3	1012111211211₃	1012111222022₃
Base 4	2130033031₄	2130100223₄
Base 5	130434244₅	130440133₅
Base 6	21414421₆	21415055₆
Base 7	5303512₇	5304005₇
Base 8	2341715₈	2342053₈
Base 9	1174754₉	1174868₉
Base 10	639949₁₀	640043₁₀
Base 11	3a7892₁₁	3a7968₁₁
Base 12	26a411₁₂	26a48b₁₂
Base 13	19538b₁₃	195431₁₃
Base 14	129309₁₄	129375₁₄
Base 15	c9934₁₅	c9998₁₅
Base 16	9c3cd₁₆	9c42b₁₆