Compare 815 vs 820

Property	815	820
Type	semiprime	composite number
Unique factors	2	3
Total factors	2	4
Prime factorization	5¹ × 163¹	2² × 5¹ × 41¹
Prime factorization	5 × 163	2 × 2 × 5 × 41
Divisors count	4	12
Divisors	1, 5, 163, 815	1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
Number of properties	1	0
Semiprimes	247th
Roman numberals	DCCCXV	DCCCXX
Base 2	1100101111₂	1100110100₂
Base 3	1010012₃	1010101₃
Base 4	30233₄	30310₄
Base 5	11230₅	11240₅
Base 6	3435₆	3444₆
Base 7	2243₇	2251₇
Base 8	1457₈	1464₈
Base 9	1105₉	1111₉
Base 10	815₁₀	820₁₀
Base 11	681₁₁	686₁₁
Base 12	57b₁₂	584₁₂
Base 13	4a9₁₃	4b1₁₃
Base 14	423₁₄	428₁₄
Base 15	395₁₅	39a₁₅
Base 16	32f₁₆	334₁₆