Compare 81991 vs 81997

Property	81991	81997
Type	composite number	semiprime
Unique factors	4	2
Total factors	4	2
Prime factorization	7¹ × 13¹ × 17¹ × 53¹	167¹ × 491¹
Prime factorization	7 × 13 × 17 × 53	167 × 491
Divisors count	16	4
Divisors	1, 7, 13, 17, 53, 91, 119, 221, 371, 689, 901, 1547, 4823, 6307, 11713, 81991	1, 167, 491, 81997
Number of properties	0	1
Semiprimes		19349th
Roman numberals
Base 2	10100000001000111₂	10100000001001101₂
Base 3	11011110201₃	11011110221₃
Base 4	110001013₄	110001031₄
Base 5	10110431₅	10110442₅
Base 6	1431331₆	1431341₆
Base 7	461020₇	461026₇
Base 8	240107₈	240115₈
Base 9	134421₉	134427₉
Base 10	81991₁₀	81997₁₀
Base 11	56668₁₁	56673₁₁
Base 12	3b547₁₂	3b551₁₂
Base 13	2b420₁₃	2b426₁₃
Base 14	21c47₁₄	21c4d₁₄
Base 15	19461₁₅	19467₁₅
Base 16	14047₁₆	1404d₁₆