Compare 639987 vs 639997

Property	639987	639997
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	3¹ × 213329¹	639997¹
Prime factorization	3 × 213329	639997
Divisors count	4	2
Divisors	1, 3, 213329, 639987	1, 639997
Number of properties	1	4
Additive primes		20349th
Isolated primes		40813th
Lucky primes		5977th
Primes		52074th
Semiprimes	137145th
Roman numberals
Base 2	10011100001111110011₂	10011100001111111101₂
Base 3	1012111220020₃	1012111220121₃
Base 4	2130033303₄	2130033331₄
Base 5	130434422₅	130434442₅
Base 6	21414523₆	21414541₆
Base 7	5303565₇	5303611₇
Base 8	2341763₈	2341775₈
Base 9	1174806₉	1174817₉
Base 10	639987₁₀	639997₁₀
Base 11	3a7917₁₁	3a7926₁₁
Base 12	26a443₁₂	26a451₁₂
Base 13	1953ba₁₃	1953c7₁₃
Base 14	129335₁₄	129341₁₄
Base 15	c995c₁₅	c9967₁₅
Base 16	9c3f3₁₆	9c3fd₁₆