1. Numbers
  2. Compare 663979 vs 663989

Compare 663979 vs 663989

Property663979663989
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization6639791311 × 214191
Prime factorization66397931 × 21419
Divisors count24
Divisors1, 6639791, 31, 21419, 663989
Number of properties101
Chen primes21068th 
Cousin primes (1st member)5809th 
Lucky primes6163rd 
Primes53865th 
Prime triplets (2nd member)2118th 
Prime triplets (3rd member)2117th 
Semiprimes 142065th
Sexy primes (2nd member)11627th 
Sexy prime quadrupletss (4th member)238th 
Sexy prime triplets (3rd member)2120th 
Twin primes (2nd member)5816th 
Roman numberals  
Base 2101000100001101010112101000100001101101012
Base 31020201210211310202012110123
Base 42202012223422020123114
Base 513222140451322214245
Base 6221215516221220056
Base 75433541754335547
Base 82420653824206658
Base 91221724912217359
Base 106639791066398910
Base 114139481141395711
Base 122802b71228030512
Base 131a32b4131a32c113
Base 14133d9114133d9b14
Base 15d1b0415d1b0e15
Base 16a21ab16a21b516
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