Compare 639983 vs 639986

Property	639983	639986
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	639983¹	2¹ × 319993¹
Prime factorization	639983	2 × 319993
Divisors count	2	4
Divisors	1, 639983	1, 2, 319993, 639986
Number of properties	4	1
Chen primes	20376th
Happy primes	7412th
Isolated primes	40812th
Primes	52073rd
Semiprimes		137144th
Roman numberals
Base 2	10011100001111101111₂	10011100001111110010₂
Base 3	1012111220002₃	1012111220012₃
Base 4	2130033233₄	2130033302₄
Base 5	130434413₅	130434421₅
Base 6	21414515₆	21414522₆
Base 7	5303561₇	5303564₇
Base 8	2341757₈	2341762₈
Base 9	1174802₉	1174805₉
Base 10	639983₁₀	639986₁₀
Base 11	3a7913₁₁	3a7916₁₁
Base 12	26a43b₁₂	26a442₁₂
Base 13	1953b6₁₃	1953b9₁₃
Base 14	129331₁₄	129334₁₄
Base 15	c9958₁₅	c995b₁₅
Base 16	9c3ef₁₆	9c3f2₁₆