1. Numbers
  2. Compare 641 vs 642

Compare 641 vs 642

Property641642
Typeprimecomposite number
Unique factors13
Total factors13
Prime factorization641121 × 31 × 1071
Prime factorization6412 × 3 × 107
Divisors count28
Divisors1, 6411, 2, 3, 6, 107, 214, 321, 642
Number of properties140
Additive primes62nd 
Chen primes81st 
Good primes35th 
Primes116th 
Prime triplets (1st member)24th 
Proth primes14th 
Pythagorean primes55th 
Quartan primes6th 
Sexy primes (1st member)57th 
Sexy prime quadrupletss (1st member)7th 
Sexy prime triplets (1st member)24th 
Solinas primes41st 
Sophie germain primes28th 
Twin primes (1st member)29th 
Roman numberalsDCXLIDCXLII
Base 21010000001210100000102
Base 321220232122103
Base 4220014220024
Base 5100315100325
Base 62545625506
Base 71604716057
Base 81201812028
Base 978297839
Base 106411064210
Base 115331153411
Base 124551245612
Base 133a4133a513
Base 1433b1433c14
Base 152cb152cc15
Base 162811628216
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