2,176,886

2 × 1088443

Starting at 2,176,886, the Collatz iteration reaches 1 after 91 steps. The first transition is 1088443; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 1088443

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 3,265,332

Proper Divisor Sum 1,088,446

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #2176883 ← → #2176891

Radix Representation

Decimal	2176886
Binary	1000010011011101110110 (22 bits)
Octal	0o10233566
Hexadecimal	0x213776

Divisor Catalog (4)

1 2 1,088,443 2,176,886

Collatz Trajectory (91 steps to reach 1)

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

2,176,886 1,088,443 3,265,330 1,632,665 4,897,996 2,448,998 1,224,499 3,673,498 1,836,749 5,510,248 2,755,124 1,377,562 688,781 2,066,344 1,033,172 516,586 258,293 774,880 387,440 193,720 96,860 48,430 24,215 72,646 36,323 108,970 54,485 163,456 81,728 40,864 20,432 10,216 5,108 2,554 1,277 3,832 1,916 958 479 1,438 719 2,158 1,079 3,238 1,619 4,858 2,429 7,288 3,644 1,822 911 2,734 1,367 4,102 2,051 6,154 3,077 9,232 4,616 2,308

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