Compare 639979 vs 639980

Property	639979	639980
Type	semiprime	composite number
Unique factors	2	4
Total factors	2	5
Prime factorization	79¹ × 8101¹	2² × 5¹ × 11¹ × 2909¹
Prime factorization	79 × 8101	2 × 2 × 5 × 11 × 2909
Divisors count	4	24
Divisors	1, 79, 8101, 639979	1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 2909, 5818, 11636, 14545, 29090, 31999, 58180, 63998, 127996, 159995, 319990, 639980
Number of properties	1	0
Semiprimes	137142nd
Roman numberals
Base 2	10011100001111101011₂	10011100001111101100₂
Base 3	1012111212221₃	1012111212222₃
Base 4	2130033223₄	2130033230₄
Base 5	130434404₅	130434410₅
Base 6	21414511₆	21414512₆
Base 7	5303554₇	5303555₇
Base 8	2341753₈	2341754₈
Base 9	1174787₉	1174788₉
Base 10	639979₁₀	639980₁₀
Base 11	3a790a₁₁	3a7910₁₁
Base 12	26a437₁₂	26a438₁₂
Base 13	1953b2₁₃	1953b3₁₃
Base 14	12932b₁₄	12932c₁₄
Base 15	c9954₁₅	c9955₁₅
Base 16	9c3eb₁₆	9c3ec₁₆