Compare 639979 vs 640021

Property	639979	640021
Type	semiprime	semiprime
Unique factors	2	2
Total factors	2	2
Prime factorization	79¹ × 8101¹	23¹ × 27827¹
Prime factorization	79 × 8101	23 × 27827
Divisors count	4	4
Divisors	1, 79, 8101, 639979	1, 23, 27827, 640021
Number of properties	1	1
Semiprimes	137142nd	137148th
Roman numberals
Base 2	10011100001111101011₂	10011100010000010101₂
Base 3	1012111212221₃	1012111221111₃
Base 4	2130033223₄	2130100111₄
Base 5	130434404₅	130440041₅
Base 6	21414511₆	21415021₆
Base 7	5303554₇	5303644₇
Base 8	2341753₈	2342025₈
Base 9	1174787₉	1174844₉
Base 10	639979₁₀	640021₁₀
Base 11	3a790a₁₁	3a7948₁₁
Base 12	26a437₁₂	26a471₁₂
Base 13	1953b2₁₃	195415₁₃
Base 14	12932b₁₄	12935b₁₄
Base 15	c9954₁₅	c9981₁₅
Base 16	9c3eb₁₆	9c415₁₆