2,139,707

29 × 73783

Starting at 2,139,707, the Collatz iteration reaches 1 after 96 steps. The first transition is 6419122; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 29 × 73783

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,213,520

Proper Divisor Sum 73,813

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #2139691 ← → #2139733

Radix Representation

Decimal	2139707
Binary	1000001010011000111011 (22 bits)
Octal	0o10123073
Hexadecimal	0x20A63B

Divisor Catalog (4)

1 29 73,783 2,139,707

Collatz Trajectory (96 steps to reach 1)

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

2,139,707 6,419,122 3,209,561 9,628,684 4,814,342 2,407,171 7,221,514 3,610,757 10,832,272 5,416,136 2,708,068 1,354,034 677,017 2,031,052 1,015,526 507,763 1,523,290 761,645 2,284,936 1,142,468 571,234 285,617 856,852 428,426 214,213 642,640 321,320 160,660 80,330 40,165 120,496 60,248 30,124 15,062 7,531 22,594 11,297 33,892 16,946 8,473 25,420 12,710 6,355 19,066 9,533 28,600 14,300 7,150 3,575 10,726 5,363 16,090 8,045 24,136 12,068 6,034 3,017 9,052 4,526 2,263

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