Compare 21388 vs 21391

Property	21388	21391
Type	composite number	prime
Unique factors	2	1
Total factors	3	1
Prime factorization	2² × 5347¹	21391¹
Prime factorization	2 × 2 × 5347	21391
Divisors count	6	2
Divisors	1, 2, 4, 5347, 10694, 21388	1, 21391
Number of properties	0	3
Isolated primes		1676th
Primes		2401st
Sexy primes (1st member)		729th
Roman numberals
Base 2	101001110001100₂	101001110001111₂
Base 3	1002100011₃	1002100021₃
Base 4	11032030₄	11032033₄
Base 5	1141023₅	1141031₅
Base 6	243004₆	243011₆
Base 7	116233₇	116236₇
Base 8	51614₈	51617₈
Base 9	32304₉	32307₉
Base 10	21388₁₀	21391₁₀
Base 11	15084₁₁	15087₁₁
Base 12	10464₁₂	10467₁₂
Base 13	9973₁₃	9976₁₃
Base 14	7b1a₁₄	7b1d₁₄
Base 15	650d₁₅	6511₁₅
Base 16	538c₁₆	538f₁₆