Compare 997 vs 999

Property	997	999
Type	prime	composite number
Unique factors	1	2
Total factors	1	4
Prime factorization	997¹	3³ × 37¹
Prime factorization	997	3 × 3 × 3 × 37
Divisors count	2	8
Divisors	1, 997	1, 3, 9, 27, 37, 111, 333, 999
Number of properties	6	0
Isolated primes	99th
Left-truncatable primes	54th
Lucky primes	43rd
Primes	168th
Pythagorean primes	80th
Sexy primes (2nd member)	74th
Roman numberals	CMXCVII	CMXCIX
Base 2	1111100101₂	1111100111₂
Base 3	1100221₃	1101000₃
Base 4	33211₄	33213₄
Base 5	12442₅	12444₅
Base 6	4341₆	4343₆
Base 7	2623₇	2625₇
Base 8	1745₈	1747₈
Base 9	1327₉	1330₉
Base 10	997₁₀	999₁₀
Base 11	827₁₁	829₁₁
Base 12	6b1₁₂	6b3₁₂
Base 13	5b9₁₃	5bb₁₃
Base 14	513₁₄	515₁₄
Base 15	467₁₅	469₁₅
Base 16	3e5₁₆	3e7₁₆