Compare 639943 vs 639949

Property	639943	639949
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	29¹ × 22067¹	639949¹
Prime factorization	29 × 22067	639949
Divisors count	4	2
Divisors	1, 29, 22067, 639943	1, 639949
Number of properties	1	3
Isolated primes		40810th
Primes		52071st
Semiprimes	137133rd
Ulam primes		3816th
Roman numberals
Base 2	10011100001111000111₂	10011100001111001101₂
Base 3	1012111211121₃	1012111211211₃
Base 4	2130033013₄	2130033031₄
Base 5	130434233₅	130434244₅
Base 6	21414411₆	21414421₆
Base 7	5303503₇	5303512₇
Base 8	2341707₈	2341715₈
Base 9	1174747₉	1174754₉
Base 10	639943₁₀	639949₁₀
Base 11	3a7887₁₁	3a7892₁₁
Base 12	26a407₁₂	26a411₁₂
Base 13	195385₁₃	19538b₁₃
Base 14	129303₁₄	129309₁₄
Base 15	c992d₁₅	c9934₁₅
Base 16	9c3c7₁₆	9c3cd₁₆