Compare 221209 vs 221213

Property	221209	221213
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	221209¹	157¹ × 1409¹
Prime factorization	221209	157 × 1409
Divisors count	2	4
Divisors	1, 221209	1, 157, 1409, 221213
Number of properties	7	1
Happy primes	2995th
Harmonic primes	7397th
Isolated primes	15036th
Primes	19713th
Pythagorean primes	9835th
Semiprimes		49783rd
Sexy primes (2nd member)	4662nd
Sexy prime triplets (3rd member)	930th
Roman numberals
Base 2	110110000000011001₂	110110000000011101₂
Base 3	102020102221₃	102020110002₃
Base 4	312000121₄	312000131₄
Base 5	24034314₅	24034323₅
Base 6	4424041₆	4424045₆
Base 7	1610632₇	1610636₇
Base 8	660031₈	660035₈
Base 9	366387₉	366402₉
Base 10	221209₁₀	221213₁₀
Base 11	14121a₁₁	141223₁₁
Base 12	a8021₁₂	a8025₁₂
Base 13	798c1₁₃	798c5₁₃
Base 14	5a889₁₄	5a88d₁₄
Base 15	45824₁₅	45828₁₅
Base 16	36019₁₆	3601d₁₆