Compare 638989 vs 638999

Property	638989	638999
Type	composite number	prime
Unique factors	3	1
Total factors	4	1
Prime factorization	13² × 19¹ × 199¹	638999¹
Prime factorization	13 × 13 × 19 × 199	638999
Divisors count	12	2
Divisors	1, 13, 19, 169, 199, 247, 2587, 3211, 3781, 33631, 49153, 638989	1, 638999
Number of properties	0	4
Isolated primes		40755th
Primes		52002nd
Safe primes		3013th
Sexy primes (2nd member)		11268th
Roman numberals
Base 2	10011100000000001101₂	10011100000000010111₂
Base 3	1012110112021₃	1012110112122₃
Base 4	2130000031₄	2130000113₄
Base 5	130421424₅	130421444₅
Base 6	21410141₆	21410155₆
Base 7	5300641₇	5300654₇
Base 8	2340015₈	2340027₈
Base 9	1173467₉	1173478₉
Base 10	638989₁₀	638999₁₀
Base 11	3a709a₁₁	3a70a9₁₁
Base 12	269951₁₂	26995b₁₂
Base 13	194b00₁₃	194b0a₁₃
Base 14	128c21₁₄	128c2b₁₄
Base 15	c94e4₁₅	c94ee₁₅
Base 16	9c00d₁₆	9c017₁₆