Compare 6991 vs 6999

Property	6991	6999
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	6991¹	3¹ × 2333¹
Prime factorization	6991	3 × 2333
Divisors count	2	4
Divisors	1, 6991	1, 3, 2333, 6999
Number of properties	3	1
Isolated primes	576th
Primes	899th
Semiprimes		1867th
Sexy primes (1st member)	317th
Roman numberals
Base 2	1101101001111₂	1101101010111₂
Base 3	100120221₃	100121020₃
Base 4	1231033₄	1231113₄
Base 5	210431₅	210444₅
Base 6	52211₆	52223₆
Base 7	26245₇	26256₇
Base 8	15517₈	15527₈
Base 9	10527₉	10536₉
Base 10	6991₁₀	6999₁₀
Base 11	5286₁₁	5293₁₁
Base 12	4067₁₂	4073₁₂
Base 13	324a₁₃	3255₁₃
Base 14	2795₁₄	279d₁₄
Base 15	2111₁₅	2119₁₅
Base 16	1b4f₁₆	1b57₁₆