227 (number)

Last updated
← 226 227 228 →
Cardinal two hundred twenty-seven
Ordinal 227th
(two hundred twenty-seventh)
Factorization prime
Prime yes
Greek numeral ΣΚΖ´
Roman numeral CCXXVII, ccxxvii
Binary 111000112
Ternary 221023
Senary 10156
Octal 3438
Duodecimal 16B12
Hexadecimal E316

227 (two hundred [and] twenty-seven) is the natural number following 226 and preceding 228. It is also a prime number.

In mathematics

227 is a twin prime, and the start of a prime triplet. [1] 227 is a safe prime, a regular prime, [2] a Pillai prime, [3] a Stern prime, [4] and a Ramanujan prime. [5]

References

    1. ↑ Sloane, N. J. A. (ed.). "SequenceA022004(Initial members of prime triples (p, p+2, p+6))". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
    2. ↑ Sloane, N. J. A. (ed.). "SequenceA007703(Regular primes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
    3. ↑ Sloane, N. J. A. (ed.). "SequenceA063980(Pillai primes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
    4. ↑ Sloane, N. J. A. (ed.). "SequenceA042978(Stern primes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
    5. ↑ Sloane, N. J. A. (ed.). "SequenceA104272(Ramanujan primes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
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