λ
Sequence Observatory

1,277,877

3 × 425959
Deficient Odd Composite

Starting at 1,277,877, the Collatz iteration reaches 1 after 186 steps. The first transition is 3833632; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 3 × 425959
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 1,703,840
Proper Divisor Sum 425,963
Digit Sum / Digital Root 39 (Root: 3)
Adjacent Primes #1277867 ← → #1277879

Radix Representation

Decimal 1277877
Binary 100110111111110110101 (21 bits)
Octal 0o4677665
Hexadecimal 0x137FB5

Divisor Catalog (4)

1 3 425,959 1,277,877

Collatz Trajectory (186 steps to reach 1)

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

1,277,877 3,833,632 1,916,816 958,408 479,204 239,602 119,801 359,404 179,702 89,851 269,554 134,777 404,332 202,166 101,083 303,250 151,625 454,876 227,438 113,719 341,158 170,579 511,738 255,869 767,608 383,804 191,902 95,951 287,854 143,927 431,782 215,891 647,674 323,837 971,512 485,756 242,878 121,439 364,318 182,159 546,478 273,239 819,718 409,859 1,229,578 614,789 1,844,368 922,184 461,092 230,546 115,273 345,820 172,910 86,455 259,366 129,683 389,050 194,525 583,576 291,788

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