λ
Prime Ledger
Atlas › Integer Profiles › Node 215,961

215,961

3 × 71987
Deficient Odd Composite

215,961 has the prime decomposition 3 × 71987. Its 2 distinct prime factors produce 4 positive divisors.

Prime Factor Structure

Factorization String 3 × 71987
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 287,952
Proper Divisor Sum 71,991
Digit Sum / Digital Root 24 (Root: 6)
Adjacent Primes #215959 ← → #215981

Radix Representation

Decimal 215961
Binary 110100101110011001 (18 bits)
Octal 0o645631
Hexadecimal 0x34B99

Divisor Catalog (4)

1 3 71,987 215,961

Collatz Trajectory (93 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

215,961 647,884 323,942 161,971 485,914 242,957 728,872 364,436 182,218 91,109 273,328 136,664 68,332 34,166 17,083 51,250 25,625 76,876 38,438 19,219 57,658 28,829 86,488 43,244 21,622 10,811 32,434 16,217 48,652 24,326 12,163 36,490 18,245 54,736 27,368 13,684 6,842 3,421 10,264 5,132 2,566 1,283 3,850 1,925 5,776 2,888 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

More profiles

7,111,902 8,072,224 5,791,178 5,949,242 4,311,116 2,783,045 2,780,684 4,462,987 9,662,664 4,420,266 4,341,002 7,554,616 3,181,089 #C7A7E5 6,231,507 9,392,271
← Previous Integer #215,960 Browse Full Index Next Integer #215,962 →