Compare 638971 vs 638980

Property	638971	638980
Type	prime	composite number
Unique factors	1	4
Total factors	1	5
Prime factorization	638971¹	2² × 5¹ × 43¹ × 743¹
Prime factorization	638971	2 × 2 × 5 × 43 × 743
Divisors count	2	24
Divisors	1, 638971	1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 743, 860, 1486, 2972, 3715, 7430, 14860, 31949, 63898, 127796, 159745, 319490, 638980
Number of properties	4	0
Isolated primes	40752nd
Primes	51999th
Sexy primes (1st member)	11267th
Ulam primes	3811th
Roman numberals
Base 2	10011011111111111011₂	10011100000000000100₂
Base 3	1012110111121₃	1012110111221₃
Base 4	2123333323₄	2130000010₄
Base 5	130421341₅	130421410₅
Base 6	21410111₆	21410124₆
Base 7	5300614₇	5300626₇
Base 8	2337773₈	2340004₈
Base 9	1173447₉	1173457₉
Base 10	638971₁₀	638980₁₀
Base 11	3a7083₁₁	3a7091₁₁
Base 12	269937₁₂	269944₁₂
Base 13	194ab8₁₃	194ac4₁₃
Base 14	128c0b₁₄	128c16₁₄
Base 15	c94d1₁₅	c94da₁₅
Base 16	9bffb₁₆	9c004₁₆