Compare 990989 vs 990991

Property	990989	990991
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	990989¹	443¹ × 2237¹
Prime factorization	990989	443 × 2237
Divisors count	2	4
Divisors	1, 990989	1, 443, 2237, 990991
Number of properties	4	1
Chen primes	29726th
Emirps	10968th
Isolated primes	61633rd
Primes	77848th
Semiprimes		208236th
Roman numberals
Base 2	11110001111100001101₂	11110001111100001111₂
Base 3	1212100101022₃	1212100101101₃
Base 4	3301330031₄	3301330033₄
Base 5	223202424₅	223202431₅
Base 6	33123525₆	33123531₆
Base 7	11265116₇	11265121₇
Base 8	3617415₈	3617417₈
Base 9	1770338₉	1770341₉
Base 10	990989₁₀	990991₁₀
Base 11	6175aa₁₁	617601₁₁
Base 12	3b95a5₁₂	3b95a7₁₂
Base 13	2890ac₁₃	2890b1₁₃
Base 14	1bb20d₁₄	1bb211₁₄
Base 15	14895e₁₅	148961₁₅
Base 16	f1f0d₁₆	f1f0f₁₆