Compare 638971 vs 640247

Property	638971	640247
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	638971¹	640247¹
Prime factorization	638971	640247
Divisors count	2	2
Divisors	1, 638971	1, 640247
Number of properties	4	5
Additive primes		20362nd
Chen primes		20388th
Isolated primes	40752nd
Primes	51999th	52097th
Sexy primes (1st member)	11267th
Twin primes (1st member)		5635th
Ulam primes	3811th	3818th
Roman numberals
Base 2	10011011111111111011₂	10011100010011110111₂
Base 3	1012110111121₃	1012112020212₃
Base 4	2123333323₄	2130103313₄
Base 5	130421341₅	130441442₅
Base 6	21410111₆	21420035₆
Base 7	5300614₇	5304416₇
Base 8	2337773₈	2342367₈
Base 9	1173447₉	1175225₉
Base 10	638971₁₀	640247₁₀
Base 11	3a7083₁₁	3a8033₁₁
Base 12	269937₁₂	26a61b₁₂
Base 13	194ab8₁₃	19555a₁₃
Base 14	128c0b₁₄	12947d₁₄
Base 15	c94d1₁₅	c9a82₁₅
Base 16	9bffb₁₆	9c4f7₁₆