Compare 21609 vs 21613

Property	21609	21613
Type	composite number	prime
Unique factors	2	1
Total factors	6	1
Prime factorization	3² × 7⁴	21613¹
Prime factorization	3 × 3 × 7 × 7 × 7 × 7	21613
Divisors count	15	2
Divisors	1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 2401, 3087, 7203, 21609	1, 21613
Number of properties	0	8
Additive primes		1126th
Cousin primes (1st member)		370th
Left-truncatable primes		172nd
Lucky primes		392nd
Primes		2428th
Prime triplets (2nd member)		185th
Pythagorean primes		1204th
Twin primes (2nd member)		369th
Roman numberals
Base 2	101010001101001₂	101010001101101₂
Base 3	1002122100₃	1002122111₃
Base 4	11101221₄	11101231₄
Base 5	1142414₅	1142423₅
Base 6	244013₆	244021₆
Base 7	120000₇	120004₇
Base 8	52151₈	52155₈
Base 9	32570₉	32574₉
Base 10	21609₁₀	21613₁₀
Base 11	15265₁₁	15269₁₁
Base 12	10609₁₂	10611₁₂
Base 13	9ab3₁₃	9ab7₁₃
Base 14	7c37₁₄	7c3b₁₄
Base 15	6609₁₅	660d₁₅
Base 16	5469₁₆	546d₁₆