Compare 1640 vs 1642

Property	1640	1642
Type	composite number	semiprime
Unique factors	3	2
Total factors	5	2
Prime factorization	2³ × 5¹ × 41¹	2¹ × 821¹
Prime factorization	2 × 2 × 2 × 5 × 41	2 × 821
Divisors count	16	4
Divisors	1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640	1, 2, 821, 1642
Number of properties	0	1
Semiprimes		471st
Roman numberals	MDCXL	MDCXLII
Base 2	11001101000₂	11001101010₂
Base 3	2020202₃	2020211₃
Base 4	121220₄	121222₄
Base 5	23030₅	23032₅
Base 6	11332₆	11334₆
Base 7	4532₇	4534₇
Base 8	3150₈	3152₈
Base 9	2222₉	2224₉
Base 10	1640₁₀	1642₁₀
Base 11	1261₁₁	1263₁₁
Base 12	b48₁₂	b4a₁₂
Base 13	992₁₃	994₁₃
Base 14	852₁₄	854₁₄
Base 15	745₁₅	747₁₅
Base 16	668₁₆	66a₁₆