Compare 639983 vs 639985

Property	639983	639985
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	639983¹	5¹ × 127997¹
Prime factorization	639983	5 × 127997
Divisors count	2	4
Divisors	1, 639983	1, 5, 127997, 639985
Number of properties	4	1
Chen primes	20376th
Happy primes	7412th
Isolated primes	40812th
Primes	52073rd
Semiprimes		137143rd
Roman numberals
Base 2	10011100001111101111₂	10011100001111110001₂
Base 3	1012111220002₃	1012111220011₃
Base 4	2130033233₄	2130033301₄
Base 5	130434413₅	130434420₅
Base 6	21414515₆	21414521₆
Base 7	5303561₇	5303563₇
Base 8	2341757₈	2341761₈
Base 9	1174802₉	1174804₉
Base 10	639983₁₀	639985₁₀
Base 11	3a7913₁₁	3a7915₁₁
Base 12	26a43b₁₂	26a441₁₂
Base 13	1953b6₁₃	1953b8₁₃
Base 14	129331₁₄	129333₁₄
Base 15	c9958₁₅	c995a₁₅
Base 16	9c3ef₁₆	9c3f1₁₆